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A1C220-6-18 — BOLT,SHEAR

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

A1C220-6-18: BOLT,SHEAR.

The BOLT,SHEAR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: DOUBLE HEXAGON, grip_length: 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN, head_height: 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-026-2125, 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
A1C220-6-18
NSN: 5306-00-026-2125
FSC: 5306 — Bolts
CAGE: 06725 — SPS TECHNOLOGIES, LLC DBA AIR INDUSTRIES COMPANY DIV AIR INDUSTRIES COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleDOUBLE HEXAGON
grip_length1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN
head_height0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN
thread_length0.374 INCHES MINIMUM AND 0.441 INCHES MAXIMUM IN
fastener_length1.509 INCHES MINIMUM AND 1.556 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_between_flats0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN
nominal_thread_diameter0.375 INCHES IN
NSN5306-00-026-2125
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: A1C220-6-18 · 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: 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.509 INCHES MINIMUM AND 1.556 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.374 INCHES MINIMUM AND 0.441 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
HEAD STYLE: DOUBLE HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
GRIP LENGTH: 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN
•
WIDTH BETWEEN FLATS: 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN
FASTENER LENGTH1.509 INCHES MINIMUM AND 1.556 INCHES MAXIMUM IN
THREAD LENGTH0.374 INCHES MINIMUM AND 0.441 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD STYLEDOUBLE HEXAGON
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN
GRIP DIAMETER0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
SUBSTITUTES & CROSS-REFERENCES 4
MB13-6-18Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
73992-6-18Reference document
Same NSN cross-reference
Reference document — Secondary reference
ST3M561-6-17Reference document
Same NSN cross-reference
Reference document — Secondary reference
A1C244-6D18Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A1C220-6-18?
A1C220-6-18 is a BOLT,SHEAR.
What parts can replace A1C220-6-18?
There are 4 known substitutes for A1C220-6-18: MB13-6-18, 73992-6-18, ST3M561-6-17 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A1C220-6-18?
A1C220-6-18 is cataloged in the U.S. Government catalog under NSN 5306-00-026-2125. 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.