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A1137-16 — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

A1137-16: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 1.250 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN, fastener_length: 3.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-071-2077, 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
A1137-16
NSN: 5305-00-071-2077
FSC: 5305 — Screws
CAGE: 0BUN9 — M. E. INDUSTRIES, INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN
thread_class2A A
thread_length1.250 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN
fastener_length3.500 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentZINC AND CHROMATE OVERALL
width_between_flats0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
end_item_identificationMRAP BUFFALO MK2A2; MULTIPLE LAUNCH ROCKET SYSTEM (MLRS); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE
nominal_thread_diameter0.500 INCHES IN
minimum_tensile_strength150000 POUNDS PER SQUARE INCH LBS
NSN5305-00-071-2077
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: A1137-16 · 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: 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN
•
FASTENER LENGTH: 3.500 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 1.250 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAEJ429 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OR ASTMA354 GRADE BD ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN
FASTENER LENGTH3.500 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH1.250 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAEJ429 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OR ASTMA354 GRADE BD ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.500 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
SURFACE TREATMENTZINC AND CHROMATE OVERALL
SUBSTITUTES & CROSS-REFERENCES 9
ASME B18.2.1Reference document
Same NSN cross-reference
Reference document — Secondary reference
WG103853Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
MS90725-121Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
FFS85Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
WG102853Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
MS90728-121Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A1137-16?
A1137-16 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace A1137-16?
There are 9 known substitutes for A1137-16: ASME B18.2.1, WG103853, MS90725-121 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A1137-16?
A1137-16 is cataloged in the U.S. Government catalog under NSN 5305-00-071-2077. This indicates validated use in U.S. government and defense supply chains.
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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.