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MS21250-18018 — BOLT,SHEAR

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

MS21250-18018: BOLT,SHEAR.

The BOLT,SHEAR is a the manufacturer industrial component. Key specifications include head_style: DOUBLE HEXAGON W/HOLE, grip_length: 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN, head_height: 1.041 INCHES MINIMUM AND 1.061 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 1.1225 INCHES MINIMUM AND 1.1240 INCHES MAXIMUM IN, thread_length: 1.650 INCHES MINIMUM AND 1.690 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-063-1000, 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
MS21250-18018
NSN: 5306-01-063-1000
FSC: 5306 — Bolts
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
head_styleDOUBLE HEXAGON W/HOLE
grip_length1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN
head_height1.041 INCHES MINIMUM AND 1.061 INCHES MAXIMUM IN
thread_class3A A
grip_diameter1.1225 INCHES MINIMUM AND 1.1240 INCHES MAXIMUM IN
thread_length1.650 INCHES MINIMUM AND 1.690 INCHES MAXIMUM IN
fastener_length2.785 INCHES MINIMUM AND 2.805 INCHES MAXIMUM IN
hardness_rating39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
width_between_flats1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN
nominal_thread_diameter1.125 INCHES IN
extended_washer_diameter1.865 INCHES MINIMUM AND 1.875 INCHES MAXIMUM IN
NSN5306-01-063-1000
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS21250-18018 · 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: 0.248 INCHES MINIMUM AND 0.268 INCHES MAXIMUM IN
•
HEAD HEIGHT: 1.041 INCHES MINIMUM AND 1.061 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.785 INCHES MINIMUM AND 2.805 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 1.865 INCHES MINIMUM AND 1.875 INCHES MAXIMUM IN
•
THREAD LENGTH: 1.650 INCHES MINIMUM AND 1.690 INCHES MAXIMUM IN
•
HARDNESS RATING: 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
•
NOMINAL THREAD DIAMETER: 1.125 INCHES IN
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.248 INCHES MINIMUM AND 0.268 INCHES MAXIMUM IN
HEAD HEIGHT1.041 INCHES MINIMUM AND 1.061 INCHES MAXIMUM IN
FASTENER LENGTH2.785 INCHES MINIMUM AND 2.805 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER1.865 INCHES MINIMUM AND 1.875 INCHES MAXIMUM IN
THREAD LENGTH1.650 INCHES MINIMUM AND 1.690 INCHES MAXIMUM IN
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER1.125 INCHES IN
HEAD STYLEDOUBLE HEXAGON W/HOLE
THREAD DIRECTIONRIGHT-HAND
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

No substitute or cross-reference records for this part.

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 MS21250-18018?
MS21250-18018 is a BOLT,SHEAR.
What is the NSN for MS21250-18018?
MS21250-18018 is cataloged in the U.S. Government catalog under NSN 5306-01-063-1000. 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.