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MS21250-04050 — BOLT,SHEAR

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

MS21250-04050: BOLT,SHEAR.

The BOLT,SHEAR is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 8740 OR STEEL COMP 6150 OVERALL, head_style: DOUBLE HEXAGON W/HOLE, grip_length: 3.115 INCHES MINIMUM AND 3.135 INCHES MAXIMUM IN, head_height: 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-080-2977, 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
MS21250-04050
NSN: 5306-01-080-2977
FSC: 5306 — Bolts
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 8740 OR STEEL COMP 6150 OVERALL
head_styleDOUBLE HEXAGON W/HOLE
grip_length3.115 INCHES MINIMUM AND 3.135 INCHES MAXIMUM IN
head_height0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
thread_length0.492 INCHES MINIMUM AND 0.532 INCHES MAXIMUM IN
surface_finish32.0 MICROINCHES GRIP
fastener_length3.627 INCHES MINIMUM AND 3.647 INCHES MAXIMUM IN
hardness_rating39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
NSN5306-01-080-2977
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS21250-04050 · 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
•
SURFACE FINISH: 32.0 MICROINCHES GRIP
•
EXTENDED WASHER THICKNESS: 0.059 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
•
FASTENER LENGTH: 3.627 INCHES MINIMUM AND 3.647 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.492 INCHES MINIMUM AND 0.532 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES GRIP
SURFACE FINISH32.0 MICROINCHES BEARING SURFACE OF HEAD
EXTENDED WASHER THICKNESS0.059 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
HEAD HEIGHT0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
FASTENER LENGTH3.627 INCHES MINIMUM AND 3.647 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
THREAD LENGTH0.492 INCHES MINIMUM AND 0.532 INCHES MAXIMUM IN
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
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 1
VFK100G-04050Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 MS21250-04050?
MS21250-04050 is a BOLT,SHEAR.
What parts can replace MS21250-04050?
There is 1 known substitute for MS21250-04050: VFK100G-04050. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21250-04050?
MS21250-04050 is cataloged in the U.S. Government catalog under NSN 5306-01-080-2977. 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.