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C305-10-40 — BOLT,SHEAR

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

C305-10-40: BOLT,SHEAR.

The BOLT,SHEAR is a the manufacturer industrial component. Key specifications include material: STEEL COMP H11 OVERALL, head_style: DOUBLE HEXAGON EXTENDED WASHER, grip_length: 2.490 INCHES MINIMUM AND 2.510 INCHES MAXIMUM IN, head_height: 0.663 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.6230 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-081-1252, 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
C305-10-40
NSN: 5306-01-081-1252
FSC: 5306 — Bolts
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL COMP H11 OVERALL
head_styleDOUBLE HEXAGON EXTENDED WASHER
grip_length2.490 INCHES MINIMUM AND 2.510 INCHES MAXIMUM IN
head_height0.663 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.6230 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN
thread_length1.127 INCHES MINIMUM AND 1.177 INCHES MAXIMUM IN
surface_finish32.0 MICROINCHES BEARING SURFACE OF HEAD
fastener_length3.637 INCHES MINIMUM AND 3.667 INCHES MAXIMUM IN
hardness_rating51.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OR NICKEL AND CADMIUM OVERALL
NSN5306-01-081-1252
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: C305-10-40 · 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: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.663 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN
•
FASTENER LENGTH: 3.637 INCHES MINIMUM AND 3.667 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-8837 TY 2 CL 3 MIL SPEC 1ST TREATMENT RESPONSE OR AMS 2416 ASSN STD 2ND TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 1.185 INCHES MINIMUM AND 1.195 INCHES MAXIMUM IN
•
THREAD LENGTH: 1.127 INCHES MINIMUM AND 1.177 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES GRIP
SURFACE FINISH32.0 MICROINCHES BEARING SURFACE OF HEAD
EXTENDED WASHER THICKNESS0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
HEAD HEIGHT0.663 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN
FASTENER LENGTH3.637 INCHES MINIMUM AND 3.667 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-8837 TY 2 CL 3 MIL SPEC 1ST TREATMENT RESPONSE OR AMS 2416 ASSN STD 2ND TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER1.185 INCHES MINIMUM AND 1.195 INCHES MAXIMUM IN
THREAD LENGTH1.127 INCHES MINIMUM AND 1.177 INCHES MAXIMUM IN
HARDNESS RATING51.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS-6485 ASSN STD SINGLE MATERIAL RESPONSE OR AMS-6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
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
EWB26-10-40Reference document
Same NSN cross-reference
Reference document — Secondary reference
VS2005-10-40Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 C305-10-40?
C305-10-40 is a BOLT,SHEAR.
What parts can replace C305-10-40?
There are 2 known substitutes for C305-10-40: EWB26-10-40, VS2005-10-40. Substitute compatibility should be verified for your specific system.
What is the NSN for C305-10-40?
C305-10-40 is cataloged in the U.S. Government catalog under NSN 5306-01-081-1252. 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.