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3HA509 — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

3HA509: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, head_height: 0.455 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 9.312 INCHES MINIMUM AND 9.500 INCHES MAXIMUM IN, fastener_length: 9.312 INCHES MINIMUM AND 9.500 INCHES MAXIMUM IN, special_features: HEAD SHALL BE MARKED IN ACCORDANCE WITH MIL-HDBK-131; RAISED MARKINGS ARE PREFERRED, STAMPINGS ARE ACCEPTABLE. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-504-9781, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
3HA509
NSN: 5305-01-504-9781
FSC: 5305 — Screws
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
head_styleHEXAGON
head_height0.455 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN
thread_class2A A
thread_length9.312 INCHES MINIMUM AND 9.500 INCHES MAXIMUM IN
fastener_length9.312 INCHES MINIMUM AND 9.500 INCHES MAXIMUM IN
special_featuresHEAD SHALL BE MARKED IN ACCORDANCE WITH MIL-HDBK-131; RAISED MARKINGS ARE PREFERRED, STAMPINGS ARE ACCEPTABLE
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_between_flats1.100 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
supplementary_featuresMIN. TENSILE STRENGTH-LBS. 40,100; DIM ACROSS CORNERS 1.254 MIN., 1.299 MAX.; RADIUS 0.020 MIN., 0.045 MAX.; THREADS IN ACCORDANCE WITH SCREW THREAD STANDARDS FOR FEDERAL SERVICES, HANDBOOK H28
end_item_identificationMEDIUM TACTICAL VEHICLE REPLACEMENT (MTVR) 2320-01-465-2174
nominal_thread_diameter0.750 INCHES IN
NSN5305-01-504-9781
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3HA509 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
HEAD HEIGHT: 0.455 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN
•
FASTENER LENGTH: 9.312 INCHES MINIMUM AND 9.500 INCHES MAXIMUM IN
•
THREAD LENGTH: 9.312 INCHES MINIMUM AND 9.500 INCHES MAXIMUM IN
•
SUPPLEMENTARY FEATURES: MIN. TENSILE STRENGTH-LBS. 40,100; DIM ACROSS CORNERS 1.254 MIN., 1.299 MAX.; RADIUS 0.020 MIN., 0.045 MAX.; THREADS IN ACCORDANCE WITH SCREW THREAD STANDARDS FOR FEDERAL SERVICES, HANDBOOK H28
•
NOMINAL THREAD DIAMETER: 0.750 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
SPECIFICATION/STANDARD DATA: 94231-17614 MANUFACTURERS STANDARD
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.455 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN
FASTENER LENGTH9.312 INCHES MINIMUM AND 9.500 INCHES MAXIMUM IN
THREAD LENGTH9.312 INCHES MINIMUM AND 9.500 INCHES MAXIMUM IN
SUPPLEMENTARY FEATURESMIN. TENSILE STRENGTH-LBS. 40,100; DIM ACROSS CORNERS 1.254 MIN., 1.299 MAX.; RADIUS 0.020 MIN., 0.045 MAX.; THREADS IN ACCORDANCE WITH SCREW THREAD STANDARDS FOR FEDERAL SERVICES, HANDBOOK H28
NOMINAL THREAD DIAMETER0.750 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
SPECIFICATION/STANDARD DATA94231-17614 MANUFACTURERS STANDARD
WIDTH BETWEEN FLATS1.100 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
SPECIAL FEATURESHEAD SHALL BE MARKED IN ACCORDANCE WITH MIL-HDBK-131; RAISED MARKINGS ARE PREFERRED, STAMPINGS ARE ACCEPTABLE
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES 1
03176141424Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3HA509?
3HA509 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace 3HA509?
There is 1 known substitute for 3HA509: 03176141424. Substitute compatibility should be verified for your specific system.
What is the NSN for 3HA509?
3HA509 is cataloged in the U.S. Government catalog under NSN 5305-01-504-9781. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.