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Technical Data Sheet
PartsTable / COMPONENT / AN6-23
AN6-23 ✓ 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: 1.812 INCHES NOMINAL IN, head_height: 0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.641 INCHES MINIMUM IN, fastener_length: 2.453 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-167-3689, 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
AN6-23
NSN: 5306-00-167-3689
FSC: 5306
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (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_length1.812 INCHES NOMINAL IN
head_height0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
thread_class3A A
thread_length0.641 INCHES MINIMUM IN
fastener_length2.453 INCHES NOMINAL IN
hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
surface_treatmentCADMIUM AND CHROMATE OVERALL
width_between_flats0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
NSN5306-00-167-3689
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AN6-23 · 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 TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
MINIMUM TENSILE STRENGTH: 125000 POUNDS PER SQUARE INCH LBS
•
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER: 2.250 INCHES NOMINAL FIRST HOLE IN
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 5TH MATERIAL RESPONSE OR MIL-S-8695 MIL SPEC 6TH MATERIAL RESPONSE OVERALL
•
FEATURES PROVIDED: FINISHED HEAD
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH LBS
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER2.250 INCHES NOMINAL FIRST HOLE IN
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 5TH MATERIAL RESPONSE OR MIL-S-8695 MIL SPEC 6TH MATERIAL RESPONSE OVERALL
FEATURES PROVIDEDFINISHED HEAD
FASTENER LENGTH2.453 INCHES NOMINAL IN
WIDTH BETWEEN FLATS0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
SM-C-800985-1Upgraded Successor
successor cross-reference
successor
4001255Upgraded Successor
successor cross-reference
successor
400216Upgraded Successor
successor cross-reference
successor
834818-00Interchangeable
interchangeable cross-reference
interchangeable
5325PL1655169Interchangeable
interchangeable cross-reference
interchangeable
400216CPInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN6-23?
AN6-23 is a BOLT,MACHINE.
What parts can replace AN6-23?
There are 7 known substitutes for AN6-23: SM-C-800985-1, 4001255, 400216 and 4 more. Substitute compatibility should be verified for your specific system.
Is AN6-23 still available?
AN6-23 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026