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MSA6105-12-124 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

MSA6105-12-124: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8740 OR STEEL COMP 4140 OR STEEL COMP 4340 OVERALL, head_style: DISHED HEXAGON, grip_length: 7.703 INCHES MINIMUM AND 7.797 INCHES MAXIMUM IN, head_height: 0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 1.204 INCHES MINIMUM AND 1.318 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-256-5178, 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
MSA6105-12-124
NSN: 5306-01-256-5178
FSC: 5306 — Bolts
CAGE: 0UCY9 — M.S. AEROSPACE INC. DBA MS AEROSPACE INC (USA)
SPECIFICATIONS
materialSTEEL COMP 8740 OR STEEL COMP 4140 OR STEEL COMP 4340 OVERALL
head_styleDISHED HEXAGON
grip_length7.703 INCHES MINIMUM AND 7.797 INCHES MAXIMUM IN
head_height0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
thread_class3A A
thread_length1.204 INCHES MINIMUM AND 1.318 INCHES MAXIMUM IN
fastener_length9.001 INCHES MINIMUM AND 9.021 INCHES MAXIMUM IN
hardness_rating36.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM OVERALL
locking_featureDETENT RING GRIP
special_featuresWEAPON SYSTEM ESSENTIAL
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
NSN5306-01-256-5178
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MSA6105-12-124 · 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: 0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
•
FASTENER LENGTH: 9.001 INCHES MINIMUM AND 9.021 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 1.204 INCHES MINIMUM AND 1.318 INCHES MAXIMUM IN
•
HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM OVERALL
•
SHANK UNTHREADED HOLE DIAMETER: 0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM FIRST HOLE IN
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6322 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6382 ASSN STD 2ND MATERIAL RESPONSE OR AMS 6415 ASSN STD 3RD MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
FASTENER LENGTH9.001 INCHES MINIMUM AND 9.021 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH1.204 INCHES MINIMUM AND 1.318 INCHES MAXIMUM IN
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM OVERALL
SHANK UNTHREADED HOLE DIAMETER0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM FIRST HOLE IN
CRITICALITY CODE JUSTIFICATIONFEAT
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6322 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6382 ASSN STD 2ND MATERIAL RESPONSE OR AMS 6415 ASSN STD 3RD MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.750 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES 2
50-047-12-124Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
106817-12-124Reference 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 MSA6105-12-124?
MSA6105-12-124 is a BOLT,MACHINE.
What parts can replace MSA6105-12-124?
There are 2 known substitutes for MSA6105-12-124: 50-047-12-124, 106817-12-124. Substitute compatibility should be verified for your specific system.
What is the NSN for MSA6105-12-124?
MSA6105-12-124 is cataloged in the U.S. Government catalog under NSN 5306-01-256-5178. 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.