Hex Flange Head Capscrews
Genuine Hex Flange Head Capscrews for Onan, Cummins & Fleetguard Engines
Discover our premium collection of Hex Flange Head Capscrews, engineered specifically for power engines by Onan, Cummins, and Fleetguard. These genuine replacement parts are designed to provide a secure fit and superior clamping force, essential for maintaining engine integrity under demanding conditions.
Hex Flange Head Capscrews – Durable, Reliable, Genuine Diesel Engine Parts
Our Hex Flange Head Capscrews feature integrated flanges that distribute load evenly, reducing the need for washers and enhancing stability. Crafted from high-grade materials, these capscrews resist corrosion and wear, ensuring long-lasting performance in diesel engine assemblies.
- Precision Fit: Engineered to meet exact specifications for Onan, Cummins, and Fleetguard power engines.
- Enhanced Durability: Manufactured with premium alloys for superior strength and corrosion resistance.
- Optimized Performance: Flange head design provides reliable clamping force and prevents loosening under vibration.
Maintain your diesel engine’s reliability with our genuine Hex Flange Head Capscrews—trusted by professionals and designed for performance.
Why Choose Our Hex Flange Head Capscrews?
Choose our genuine Hex Flange Head Capscrews for unmatched quality, expert support, and guaranteed compatibility with Onan, Cummins, and Fleetguard diesel engines.
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ONAN A034P020 HEX FLANGE HEAD SCREW Original ONAN/CUMMINS OEM part
ONAN
$8.87$8.10Precision engineered for steadfast durability, the ONAN A034P020 secures your power with uncompromising strength. Hex flange head design enhances torque control and ensures a secure fit in...$8.87$8.10 -
ONAN A030Z974 HEX FLANGE HEAD SCREW Original ONAN/CUMMINS OEM part
ONAN
$8.44$7.71Engineered for precision fit and lasting strength in every application Durable HEX flange head design enhances torque resistance and stability Genuine OEM component crafted by ONAN to maintain...$8.44$7.71 -
ONAN 800652003 HEX FLANGE HEAD CAPSCREW Original ONAN/CUMMINS OEM part
ONAN
$4.65$4.25Dependable fastening for peak generator performance Engineered for secure fit and long-lasting durability Precisely manufactured as an OEM part by ONAN ONAN 800-6520-03 HEX FLANGE HEAD CAPSCREW –...$4.65$4.25 -
CUMMINS 5538544 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$124.34$113.58Engineered by Cummins to deliver unmatched fastening strength and reliability under demanding conditions. Precision-machined hex flange head ensures secure clamping with reduced loosening risks...$124.34$113.58 -
CUMMINS 5538317 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$117.80$107.62Engineered for reliability and strength in every installation Designed to provide secure, vibration-resistant fastening for Cummins engines Manufactured as a genuine OEM part by Cummins for...$117.80$107.62 -
CUMMINS 5486585 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$17.80$16.27Engineered precision for uncompromising strength. Optimized flange design to secure critical engine components tightly. Certified OEM part directly from Cummins, ensuring flawless compatibility and...$17.80$16.27 -
CUMMINS 5466176 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$73.02$66.70Precision-engineered fastening solution for uncompromising power systems Durable HEX flange head design to maintain secure connections in demanding conditions Guaranteed authentic OEM part ensuring...$73.02$66.70 -
CUMMINS 5445363 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$4.95$4.52Engineered precision for steadfast performance Robust hex flange design delivers superior clamping force and vibration resistance Crafted as an official CUMMINS OEM component, assuring fit,...$4.95$4.52 -
CUMMINS 5337515 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$5.34$4.88Engineered for strength and reliability, this cap screw is the backbone of your Cummins power system. Precision-machined flange head ensures optimal torque distribution and vibration resistance...$5.34$4.88 -
CUMMINS 5335866 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$1.62$1.48Precision-engineered fastening for uncompromised engine integrity Robust corrosion resistance ensuring long-lasting reliability Manufactured and certified as a genuine Cummins OEM component for...$1.62$1.48 -
CUMMINS 5302635 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$6.19$5.66Engineered for Excellence: Depend on Cummins quality for unmatched durability and fit. Precision Performance: Designed to maintain secure assemblies under demanding power generation conditions...$6.19$5.66 -
CUMMINS 5280607 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$411.40$375.82Engineered Reliability from Cummins, Built to Endure Every Challenge Precision-Machined Hex Flange Head Design Ensures Maximum Torque and Secure Fit Superior Corrosion Resistance Extends Service...$411.40$375.82 -
CUMMINS 5268870 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$8.57$7.83Engineered for Excellence, Built to Last Precision-machined hex flange head for superior fastening strength Corrosion-resistant finish to withstand harsh operating environments Guaranteed genuine...$8.57$7.83 -
CUMMINS 4981915 HEX FLANGE HEAD CAPSCREW Original OEM part PACK OF 4
CUMMINS
$28.26$25.82Engineered for Excellence, Delivered for Dependability Durable hex flange head design for superior torque and clamping force Manufactured to strict Cummins OEM standards ensuring flawless...$28.26$25.82 -
CUMMINS 4899717 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$21.09$19.27Precision-engineered strength for steadfast performance Durable hex flange design ensuring secure and vibration-resistant fastening Manufactured as a genuine OEM part by Cummins for guaranteed...$21.09$19.27 -
CUMMINS 4892743 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$34.22$31.26Engineered to excel under pressure – the foundation of reliable power starts here. Precision machined for exact fit and unparalleled durability. Corrosion-resistant flange head design ensures...$34.22$31.26 -
CUMMINS 4394448 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$4.17$3.81Precision fastened for unmatched engine reliability Engineered to deliver lasting strength and corrosion resistance Designed specifically as a Cummins OEM component for perfect compatibility Trust...$4.17$3.81 -
CUMMINS 4389734 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$32.97$30.12Engineered for enduring strength and seamless fitment Precision hex flange head design ensures superior torque retention and vibration resistance Directly sourced as an OEM CUMMINS component...$32.97$30.12 -
CUMMINS 4387321 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$15.80$14.44Engineered for Precision and Endurance Enhanced Torque Retention for Optimal Performance Corrosion-Resistant Coating for Long-Term Reliability 100% Genuine OEM from Cummins—Guaranteed...$15.80$14.44 -
CUMMINS 4380599 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$39.92$36.46Built to anchor strength and precision in your Cummins engine assembly. High-grade material composition ensures exceptional durability under extreme conditions. Designed to maintain optimal torque...$39.92$36.46 -
CUMMINS 4359753 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$5.29$4.84Engineered for strength, crafted for reliability. Precision-engineered hex flange head for optimal torque and load distribution. Durable corrosion-resistant finish ensures lasting performance even...$5.29$4.84 -
CUMMINS 4325248 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$1.62$1.48Crafted for ultimate dependability under demanding conditions Precision-machined flange head for superior torque control Engineered to maintain engine assembly stability and prevent loosening 100%...$1.62$1.48 -
CUMMINS 4316920 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$8.35$7.63Engineered for Excellence: Precision-crafted to seamlessly fit Cummins power systems. Durability that Endures: Designed to withstand extreme vibration and thermal cycling. 100% Genuine OEM Quality:...$8.35$7.63 -
CUMMINS 4071043 HEX FLANGE HEAD CAPSCREW Original OEM part PACK OF 3
CUMMINS
$81.09$74.08Engineered precision for uncompromised power system reliability Durable hex flange design ensures optimal clamping force and vibration resistance Crafted as a genuine Cummins OEM component for...$81.09$74.08 -
CUMMINS 4070594 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$9.24$8.44Precision engineered fastening for unwavering reliability Exceptional corrosion resistance ensuring extended service life Designed exclusively as a genuine OEM Cummins replacement CUMMINS 4070594...$9.24$8.44 -
CUMMINS 4016149 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$104.95$95.87Precision-engineered strength for dependable power High-grade hex flange design ensures superior fastening Certified OEM part crafted for seamless compatibility with Cummins engines Unleashing...$104.95$95.87 -
CUMMINS 4012906 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$488.70$446.43Precision and durability engineered for your power system’s backbone High-strength flange design ensures optimal clamping force and vibration resistance Manufactured to exact Cummins specifications...$488.70$446.43 -
CUMMINS 4001048 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$245.02$223.82Engineered to excel where power meets precision. Durable Hex Flange Head design for optimal fastening strength. Precision-crafted to maintain Cummins engine integrity under rigorous conditions. 100%...$245.02$223.82 -
CUMMINS 4000837 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$76.50$69.89Precision in every thread for uncompromising power system integrity. Robust corrosion resistance ensures long-term durability under demanding operating conditions. Designed to deliver perfect torque...$76.50$69.89 -
CUMMINS 3991306 HEX FLANGE HEAD CAPSCREW Original OEM part PACK OF 8 - SUPERSEDED FROM 3863794
CUMMINS
$45.70$41.75Precision engineered for reliability and endurance. Corrosion-resistant flange head design for secure fastening. OEM Cummins part ensures perfect compatibility and peak performance. CUMMINS 3991306...$45.70$41.75 -
CUMMINS 3990876 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$74.83$68.36Precision and strength engineered for enduring performance Robust hex flange design ensures superior fastening stability Constructed from premium materials to resist corrosion and wear Authentic...$74.83$68.36 -
CUMMINS 3990127 HEX FLANGE HEAD CAPSCREW Original OEM part PACK OF 2
CUMMINS
$20.46$18.69Precision engineered fastening for uncompromising engine stability Exceptional corrosion resistance for long-lasting service in tough environments Genuine OEM Cummins part designed to meet strict...$20.46$18.69 -
CUMMINS 3963450 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$9.57$8.74Engineering strength that powers your Cummins engine’s backbone Precision-machined hex flange head for secure, vibration-resistant fastening Manufactured under strict Cummins OEM standards for...$9.57$8.74 -
CUMMINS 3960043 FRACTURE RESISTANT SCREW Original OEM part PACK OF 2
CUMMINS
$35.69$32.61Engineered for Ultimate Durability and Safety Precision Fracture Resistant Design to Withstand Harsh Conditions Certified Genuine OEM Part from Cummins for Perfect Compatibility Trust in Cummins:...$35.69$32.61 -
CUMMINS 3944593 HEX FLANGE HEAD CAPSCREW Original OEM part PACK OF 2
CUMMINS
$15.06$13.76Engineered for enduring strength and precise fitment Ensures optimal fastening security, reducing vibration and wear 100% Genuine OEM Cummins part guaranteeing compatibility and warranty...$15.06$13.76 -
CUMMINS 3942475 HEX FLANGE HEAD CAPSCREW Original OEM part PACK OF 2
CUMMINS
$42.39$38.73Precision-engineered fastening for uncompromised power system integrity Corrosion-resistant hex flange head bolt designed for demanding Cummins applications OEM-certified to guarantee seamless...$42.39$38.73 -
CUMMINS 3936684 HEX FLANGE HEAD CAPSCREW Original OEM part PACK OF 2
CUMMINS
$21.98$20.08Precision engineered for lasting reliability High-strength flange head capscrew designed for demanding applications Exceptional corrosion resistance assuring extended service life 100% genuine OEM...$21.98$20.08 -
CUMMINS 3936683 HEX FLANGE HEAD CAPSCREW Original OEM part PACK OF 2
CUMMINS
$18.54$16.94Engineered to uphold Cummins' legacy of power and reliability Precision-machined to deliver secure fastening under extreme conditions Durable flange design reduces loosening and vibration for...$18.54$16.94 -
CUMMINS 3930250 HEX FLANGE HEAD CAPSCREW Original OEM part PACK OF 2
CUMMINS
$81.33$74.29Engineered for the demanding power of Cummins engines, this hex flange head capscrew ensures secure assembly and lasting durability. Precision manufacturing delivers optimal torque retention,...$81.33$74.29 -
CUMMINS 3930249 HEX FLANGE HEAD CAPSCREW Original OEM part PACK OF 4
CUMMINS
$100.20$91.54Engineered precision, uncompromising strength Durable hex flange design ensures optimal load distribution and vibration resistance Corrosion-resistant finish extends operational life under demanding...$100.20$91.54