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MS21250-12040 — BOLT,SHEAR

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

MS21250-12040: BOLT,SHEAR.

The BOLT,SHEAR is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8740 OR STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 6150 OVERALL, head_style: DOUBLE HEXAGON W/HOLE, grip_length: 2.490 INCHES MINIMUM AND 2.510 INCHES MAXIMUM IN, head_height: 0.711 INCHES NOMINAL IN, thread_class: 3A A, grip_diameter: 0.7480 INCHES MINIMUM AND 0.7490 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-708-7672, 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
MS21250-12040
NSN: 5306-00-708-7672
FSC: 5306 — Bolts
CAGE: L4528 — LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC (CAN)
SPECIFICATIONS
materialSTEEL COMP 8740 OR STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 6150 OVERALL
head_styleDOUBLE HEXAGON W/HOLE
grip_length2.490 INCHES MINIMUM AND 2.510 INCHES MAXIMUM IN
head_height0.711 INCHES NOMINAL IN
thread_class3A A
grip_diameter0.7480 INCHES MINIMUM AND 0.7490 INCHES MAXIMUM IN
thread_length1.036 INCHES MINIMUM AND 1.076 INCHES MAXIMUM IN
fastener_length3.546 INCHES MINIMUM AND 3.566 INCHES MAXIMUM IN
hardness_rating39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_between_flats0.803 INCHES MINIMUM AND 0.814 INCHES MAXIMUM IN
NSN5306-00-708-7672
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS21250-12040 · 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
•
EXTENDED WASHER THICKNESS: 0.178 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.711 INCHES NOMINAL IN
•
FASTENER LENGTH: 3.546 INCHES MINIMUM AND 3.566 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 1.220 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN
•
THREAD LENGTH: 1.036 INCHES MINIMUM AND 1.076 INCHES MAXIMUM IN
•
HARDNESS RATING: 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-8503 MIL SPEC 4TH MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.178 INCHES NOMINAL IN
HEAD HEIGHT0.711 INCHES NOMINAL IN
FASTENER LENGTH3.546 INCHES MINIMUM AND 3.566 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER1.220 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN
THREAD LENGTH1.036 INCHES MINIMUM AND 1.076 INCHES MAXIMUM IN
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-8503 MIL SPEC 4TH MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.750 INCHES IN
HEAD STYLEDOUBLE HEXAGON W/HOLE
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-004-7044 5306-00-007-6129 5306-00-008-7899 5306-00-009-4739 5306-00-118-7332 5306-00-151-1777 5306-00-255-4507 5306-01-101-2459
SUBSTITUTES & CROSS-REFERENCES 1
VAL21013-12040Reference 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 MS21250-12040?
MS21250-12040 is a BOLT,SHEAR.
What parts can replace MS21250-12040?
There is 1 known substitute for MS21250-12040: VAL21013-12040. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21250-12040?
MS21250-12040 is cataloged in the U.S. Government catalog under NSN 5306-00-708-7672. 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.