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90-12-4125 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

90-12-4125: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include criticality_code_justification: ZZZW, part_name_assigned_by_controlling_agency: SCREW, CAP HEX HD. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-507-7162, 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
90-12-4125
NSN: 5306-01-507-7162
NIINs: 015077162, 016994185
FSC: 5306 — Bolts
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
criticality_code_justificationZZZW
part_name_assigned_by_controlling_agencySCREW, CAP HEX HD
NSN5306-01-507-7162
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 90-12-4125 · 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: 1.250 INCHES NOMINAL IN
•
THREAD LENGTH: 1.250 INCHES NOMINAL IN
•
HARDNESS RATING: 80.0 ROCKWELL B MINIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281, CL A FED SPEC 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 LENGTH1.250 INCHES NOMINAL IN
THREAD LENGTH1.250 INCHES NOMINAL IN
HARDNESS RATING80.0 ROCKWELL B MINIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281, CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.500 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
SPECIFICATION/STANDARD DATA81349-MIL-B-857/SUPERCEDED/ GOVERNMENT SPECIFICATION
WIDTH BETWEEN FLATS0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 3
2141715-23Reference document
Same NSN cross-reference
Reference document — Secondary reference
0.500-13UNC-2AX1.25NICUSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MIL-B-857Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 90-12-4125?
90-12-4125 is a BOLT,MACHINE.
What parts can replace 90-12-4125?
There are 3 known substitutes for 90-12-4125: 2141715-23, 0.500-13UNC-2AX1.25NICU, MIL-B-857. Substitute compatibility should be verified for your specific system.
What is the NSN for 90-12-4125?
90-12-4125 is cataloged in the U.S. Government catalog under NSN 5306-01-507-7162. 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.