Hex Head Capscrews

Genuine Hex Head Capscrews for Diesel Engines by Onan, Cummins & Fleetguard

Discover our premium collection of Hex Head Capscrews engineered specifically for Onan, Cummins, and Fleetguard diesel engines. These high-strength fasteners are essential for reliable engine assembly, ensuring durability and vibration resistance under demanding conditions.

Secure Your Diesel Engine with Genuine Hex Head Capscrews

Our Hex Head Capscrews, including variations such as heavy-duty hex bolts and standard hex screws, deliver exceptional clamping force and corrosion resistance. Crafted from superior-grade materials, they guarantee long-lasting performance and compatibility with your power engine components.

  • Precision Fit: Tailored to meet exact specifications for Onan, Cummins, and Fleetguard engines.
  • Robust Construction: Made from premium alloys to withstand extreme engine conditions.
  • Enhanced Durability: Resists wear, corrosion, and vibration to maintain secure assemblies.

Why Choose Our Hex Head Capscrews?

We provide only genuine, brand-certified Hex Head Capscrews to ensure optimal engine performance, extended service life, and peace of mind for your diesel engine maintenance needs.

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  • CUMMINS 3900227 - SCREW HEXAGON HEAD CAP
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    CUMMINS 3900227 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $3.64
    $3.32
    Engineered for strength and precision fastening Durable hex head design to withstand demanding engine conditions Certified OEM part ensuring full compatibility and reliability CUMMINS 3900227 HEX...
    $3.64
    $3.32
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $3.64
    $3.32
    Subtotal:
  • CUMMINS 3900225 - HEX HEAD CAPSCREW - Original OEM part - Image 1
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    CUMMINS 3900225 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $6.42
    $5.86
    Engineered to Last, Designed for Precision Exceptional Torque Strength for Critical Fastening Corrosion-Resistant Finish Ensures Longevity Genuine Cummins OEM component guaranteeing perfect fit and...
    $6.42
    $5.86
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $6.42
    $5.86
    Subtotal:
  • CUMMINS 3900223 - HEX HEAD CAPSCREW - Original OEM part - Image 1
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    CUMMINS 3900223 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $5.95
    $5.44
    Precision-engineered durability for uncompromised engine stability Crafted to meet stringent Cummins OEM standards for flawless fit and performance Corrosion-resistant finish enhances longevity in...
    $5.95
    $5.44
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $5.95
    $5.44
    Subtotal:
  • CUMMINS 3897781 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3897781 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $80.62
    $73.64
    Engineered to uphold Cummins' legacy of excellence Precision-machined hex head design ensures optimal torque and secure fastening Crafted with corrosion-resistant materials for extended service...
    $80.62
    $73.64
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $80.62
    $73.64
    Subtotal:
  • CUMMINS 3897565 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3897565 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $129.67
    $118.46
    Engineered for enduring strength and precision Ensures secure assembly under demanding conditions Genuine Cummins OEM part for guaranteed compatibility Reliability Anchored: The CUMMINS 3897565 HEX...
    $129.67
    $118.46
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $129.67
    $118.46
    Subtotal:
  • CUMMINS 3896826 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3896826 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $15.00
    $13.71
    Precision-engineered fastening for steadfast engine integrity Durable hex head design ensures secure, vibration-resistant attachment Genuine Cummins OEM component guarantees perfect...
    $15.00
    $13.71
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $15.00
    $13.71
    Subtotal:
  • CUMMINS 3896790 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3896790 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $20.89
    $19.09
    Precision fastening engineered for peak Cummins performance Corrosion-resistant material ensuring long-lasting reliability Exact OEM specifications for seamless compatibility Manufactured by Cummins...
    $20.89
    $19.09
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $20.89
    $19.09
    Subtotal:
  • CUMMINS 3896083 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3896083 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $11.73
    $10.71
    Reliable fastening for uncompromised engine performance Engineered for precise fit and long-lasting strength Corrosion-resistant hex head design for demanding environments 100% Genuine OEM Cummins...
    $11.73
    $10.71
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $11.73
    $10.71
    Subtotal:
  • CUMMINS 3893834 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3893834 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $14.34
    $13.10
    Engineered for Strength, Designed for Reliability Precision-Machined Hex Head for Secure, High-Torque Applications Durable Corrosion-Resistant Coating Extends Service Life 100% Genuine OEM CUMMINS...
    $14.34
    $13.10
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $14.34
    $13.10
    Subtotal:
  • CUMMINS 3892411 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3892411 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $19.12
    $17.46
    Precision-engineered fastening solution for robust power systems Durable construction designed to withstand high-stress engine environments 100% Genuine OEM Cummins component ensuring perfect fit...
    $19.12
    $17.46
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $19.12
    $17.46
    Subtotal:
  • CUMMINS 3892379 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3892379 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $10.30
    $9.41
    Built for Precision, Crafted for Durability High-strength Alloy Construction for maximum load resilience Corrosion-resistant coating to extend service life in demanding conditions 100% OEM...
    $10.30
    $9.41
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $10.30
    $9.41
    Subtotal:
  • CUMMINS 3892378 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3892378 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $17.88
    $16.34
    Engineered to Perfection: Experience uncompromising strength that keeps your engine assembly securely fastened under the toughest conditions. Precision Fit and Finish: Designed specifically to meet...
    $17.88
    $16.34
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $17.88
    $16.34
    Subtotal:
  • CUMMINS 3892354 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3892354 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $14.93
    $13.64
    Precision-engineered fastening for uncompromising power system integrity High-strength alloy material providing exceptional durability Advanced thread design ensuring secure and vibration-resistant...
    $14.93
    $13.64
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $14.93
    $13.64
    Subtotal:
  • CUMMINS 3882327 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3882327 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $15.00
    $13.71
    Precision engineered fastening for unwavering engine stability Durable design optimized for rugged Cummins engine applications Guaranteed genuine OEM quality preventing fitment or performance...
    $15.00
    $13.71
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $15.00
    $13.71
    Subtotal:
  • CUMMINS 3866613 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3866613 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $98.50
    $89.98
    Engineered Excellence for Structural Integrity Precision-Machined for Optimal Torque and Durability Corrosion-Resistant Finish for Long-Term Reliability Authentic OEM Part Directly from Cummins for...
    $98.50
    $89.98
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $98.50
    $89.98
    Subtotal:
  • CUMMINS 3863822 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3863822 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $11.37
    $10.39
    Precision engineered for dependable performance: Every CUMMINS 3863822 HEX HEAD CAPSCREW guarantees a perfect fit and reliable fastening in your Cummins engine assembly. Durable construction to...
    $11.37
    $10.39
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $11.37
    $10.39
    Subtotal:
  • CUMMINS 3863515 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3863515 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $35.19
    $32.15
    Precision fasteners engineered for uncompromising durability High-grade steel construction ensuring optimal torque and load resistance Exact OEM specifications tailored for Cummins engines and...
    $35.19
    $32.15
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $35.19
    $32.15
    Subtotal:
  • CUMMINS 3863364 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3863364 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $42.94
    $39.22
    Precision fastening engineered for uncompromising power. Durable hex head design ensures secure, vibration-resistant assembly. Corrosion-resistant material built for extended service life. 100%...
    $42.94
    $39.22
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $42.94
    $39.22
    Subtotal:
  • CUMMINS 3863143 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3863143 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $32.79
    $29.96
    Precision engineered for lasting strength and reliability Critical fastening component designed for peak engine performance Corrosion-resistant finish ensures durability in demanding...
    $32.79
    $29.96
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $32.79
    $29.96
    Subtotal:
  • CUMMINS 3863134 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3863134 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $63.66
    $58.15
    Precision engineered to ensure uncompromising fastening strength Superior corrosion resistance for extended component lifespan Certified genuine OEM Cummins part guaranteeing exact...
    $63.66
    $58.15
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $63.66
    $58.15
    Subtotal:
  • CUMMINS 3862966 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3862966 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $25.82
    $23.58
    Build strength that lasts with every turn. Precision-crafted hex head design ensures optimal torque and secure fastening. Constructed from premium materials to resist corrosion and wear under harsh...
    $25.82
    $23.58
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $25.82
    $23.58
    Subtotal:
  • CUMMINS 3862777 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3862777 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $35.14
    $32.10
    Cummins 3862777 - HEX HEAD CAPSCREW MINS3862777 Find the genuine 3862777 - HEX HEAD CAPSCREW by Cummins at our store, where quality meets affordability. Our store is your ultimate destination for...
    $35.14
    $32.10
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $35.14
    $32.10
    Subtotal:
  • CUMMINS 3823714 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3823714 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $169.60
    $154.93
    Precision engineered to deliver steadfast performance in every application Robust design resists corrosion and wear for extended service life Manufactured by Cummins as a certified OEM component,...
    $169.60
    $154.93
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $169.60
    $154.93
    Subtotal:
  • CUMMINS 3821002 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3821002 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $24.05
    $21.97
    Precision that powers your Cummins engine forward. Engineered for unmatched strength and long-lasting torque retention. Corrosion-resistant design to withstand demanding operational environments...
    $24.05
    $21.97
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $24.05
    $21.97
    Subtotal:
  • CUMMINS 3820988 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3820988 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $10.78
    $9.85
    Engineered for enduring strength and precise fitment to maintain your Cummins power system's integrity. Hex head design ensures optimal torque and secure fastening under demanding conditions...
    $10.78
    $9.85
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $10.78
    $9.85
    Subtotal:
  • CUMMINS 3820316 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3820316 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $142.30
    $130.00
    Engineered to fortify your power with uncompromising strength Precision-crafted hex head design for secure, vibration-resistant fastening Manufactured as a genuine OEM part by Cummins for...
    $142.30
    $130.00
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $142.30
    $130.00
    Subtotal:
  • CUMMINS 3820213 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3820213 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $53.43
    $48.81
    Engineered to Endure, Designed to Perform. Exceptional tensile strength ensures secure fastening under extreme conditions. Precision machining guarantees seamless compatibility with your Cummins...
    $53.43
    $48.81
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $53.43
    $48.81
    Subtotal:
  • CUMMINS 3820051 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3820051 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $429.04
    $391.93
    Precision engineered for reliability: Every CUMMINS 3820051 HEX HEAD CAPSCREW is crafted to exact factory specifications, ensuring uncompromised performance in demanding environments. Durability...
    $429.04
    $391.93
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $429.04
    $391.93
    Subtotal:
  • CUMMINS 3819581 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3819581 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $29.65
    $27.09
    Strength in Every Turn: Engineered to hold your power system together with unmatched precision and durability. Robust Material Composition: Crafted to withstand intense operating conditions without...
    $29.65
    $27.09
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $29.65
    $27.09
    Subtotal:
  • CUMMINS 3818229 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3818229 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $38.60
    $35.27
    Engineered to meet Cummins' exacting standards for strength and reliability Precision machining ensures a perfect fit, supporting optimal engine performance Corrosion-resistant finish for extended...
    $38.60
    $35.27
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $38.60
    $35.27
    Subtotal:
  • CUMMINS 3759526 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3759526 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $30.49
    $27.86
    Precision that powers your Cummins engine’s heart Crafted for unmatched strength and secure fastening under demanding conditions Resistant to corrosion and engineered for long-lasting service...
    $30.49
    $27.86
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $30.49
    $27.86
    Subtotal:
  • CUMMINS 3695719 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3695719 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $11.25
    $10.28
    Engineered for Endurance: Precision-crafted to meet Cummins’ rigorous standards, ensuring unwavering engine stability. Corrosion-Resistant Design: Built to withstand harsh environments and maintain...
    $11.25
    $10.28
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $11.25
    $10.28
    Subtotal:
  • CUMMINS 3680750 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3680750 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $13.39
    $12.24
    Precision engineered for uncompromising strength and dependability Robust hex head design optimized for vibration resistance Manufactured as a genuine OEM CUMMINS part to guarantee system...
    $13.39
    $12.24
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $13.39
    $12.24
    Subtotal:
  • CUMMINS 3678514 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3678514 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $23.22
    $21.21
    Precision engineered fastening for unwavering engine integrity High-strength hex head design delivers consistent torque and vibration resistance Crafted as a genuine OEM Cummins component...
    $23.22
    $21.21
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $23.22
    $21.21
    Subtotal:
  • CUMMINS 3648764 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3648764 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $48.63
    $44.42
    Engineered for precision and reliability to keep your equipment running smoothly Durable hex head capscrew designed to withstand demanding operating conditions 100% genuine Cummins OEM component for...
    $48.63
    $44.42
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $48.63
    $44.42
    Subtotal:
  • CUMMINS 3644466 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3644466 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $73.37
    $67.03
    Designed to uphold Cummins' legacy of precision and durability Crafted from premium materials to withstand engine stress and vibration Ensures secure fastening critical to engine integrity and...
    $73.37
    $67.03
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $73.37
    $67.03
    Subtotal:
  • CUMMINS 3644465 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3644465 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $174.44
    $159.35
    Engineered for precision fastening under critical power conditions Durable Hex Head design ensures secure assembly and long-lasting performance Manufactured by Cummins as a genuine OEM component for...
    $174.44
    $159.35
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $174.44
    $159.35
    Subtotal:
  • CUMMINS 3643905 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3643905 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $183.48
    $167.61
    Engineered to uphold Cummins' tradition of unmatched reliability Precision-crafted hex head capscrew designed for secure fastening under extreme conditions Manufactured from high-grade materials to...
    $183.48
    $167.61
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $183.48
    $167.61
    Subtotal:
  • CUMMINS 3638728 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3638728 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $15.69
    $14.34
    Engineered to fortify your power with precision and durability Exceptional tensile strength guarantees steadfast fastening under demanding conditions Designed to maintain optimal assembly security...
    $15.69
    $14.34
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $15.69
    $14.34
    Subtotal:
  • CUMMINS 3638713 - HEX HEAD CAPSCREW - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3638713 HEX HEAD CAPSCREW Original OEM part

    CUMMINS

    $12.75
    $11.65
    Precision engineered fastening for trusted Cummins power Durable hex head design ensures lasting hold under extreme conditions Corrosion-resistant finish provides extended service life 100% OEM...
    $12.75
    $11.65
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $12.75
    $11.65
    Subtotal:
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