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Technical Data Sheet
PartsTable / COMPONENT / AN6-77
AN6-77 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, grip_length: 7.297 INCHES MINIMUM AND 7.328 INCHES MAXIMUM IN, head_height: 0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.609 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN, fastener_length: 7.938 INCHES MINIMUM AND 7.984 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-151-2070, 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
AN6-77
NSN: 5306-00-151-2070
FSC: 5306
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 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL
head_styleHEXAGON
grip_length7.297 INCHES MINIMUM AND 7.328 INCHES MAXIMUM IN
head_height0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
thread_class3A A
thread_length0.609 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN
fastener_length7.938 INCHES MINIMUM AND 7.984 INCHES MAXIMUM IN
hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
surface_treatmentCADMIUM OVERALL
width_between_flats0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
NSN5306-00-151-2070
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AN6-77 · 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
•
THREAD DIRECTION: RIGHT-HAND
•
FASTENER LENGTH: 7.938 INCHES MINIMUM AND 7.984 INCHES MAXIMUM IN
•
THREAD CLASS: 3A A
•
HEAD STYLE: HEXAGON
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SHANK UNTHREADED HOLE DIAMETER: 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE IN
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
•
HEAD HEIGHT: 0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
FASTENER LENGTH7.938 INCHES MINIMUM AND 7.984 INCHES MAXIMUM IN
THREAD CLASS3A A
HEAD STYLEHEXAGON
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SHANK UNTHREADED HOLE DIAMETER0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE IN
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
AN173-21AUpgraded Successor
successor cross-reference
successor
B6812Upgraded Successor
successor cross-reference
successor
AN173H21AUpgraded Successor
successor cross-reference
successor
AN174-40Upgraded Successor
successor cross-reference
successor
AN174H40Upgraded Successor
successor cross-reference
successor
AN174H37Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN6-77?
AN6-77 is a BOLT,MACHINE.
What parts can replace AN6-77?
There are 23 known substitutes for AN6-77: AN173-21A, B6812, AN173H21A and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AN6-77?
AN6-77 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-151-2070. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026