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Technical Data Sheet
PartsTable / COMPONENT / AN4-23A
AN4-23A ✓ 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 material: STEEL OVERALL, shank_length: 0.469 INCHES NOMINAL IN, thread_class: 3A A, thread_length: 0.406 INCHES NOMINAL IN, overall_length: 1.125 INCHES NOMINAL IN, style_designator: ROUND, CLOSED W/SHOULDER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-151-1413, 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
AN4-23A
NSN: 5306-00-151-1413
FSC: 5306
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
shank_length0.469 INCHES NOMINAL IN
thread_class3A A
thread_length0.406 INCHES NOMINAL IN
overall_length1.125 INCHES NOMINAL IN
style_designatorROUND, CLOSED W/SHOULDER
thread_directionRIGHT-HAND
eye_outside_width0.438 INCHES NOMINAL IN
shoulder_diameter0.438 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
shoulder_thickness0.062 INCHES NOMINAL IN
eye_inside_diameter0.191 INCHES NOMINAL IN
NSN5306-00-151-1413
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AN4-23A · 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
•
MINIMUM TENSILE STRENGTH: 125000 POUNDS PER SQUARE INCH LBS
•
FASTENER LENGTH: 2.406 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 28
•
THREAD LENGTH: 0.468 INCHES MINIMUM IN
•
WIDTH BETWEEN FLATS: 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-6812 MIL SPEC ALL MATERIAL RESPONSES OVERALL
•
FEATURES PROVIDED: FINISHED HEAD
•
THREAD CLASS: 3A A
TECHNICAL CHARACTERISTICS (FLIS)
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH LBS
FASTENER LENGTH2.406 INCHES NOMINAL IN
THREAD QUANTITY PER INCH28
THREAD LENGTH0.468 INCHES MINIMUM IN
WIDTH BETWEEN FLATS0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-6812 MIL SPEC ALL MATERIAL RESPONSES OVERALL
FEATURES PROVIDEDFINISHED HEAD
THREAD CLASS3A A
THREAD SERIES DESIGNATORUNF
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
AN42B3AUpgraded Successor
successor cross-reference
successor
AN42-3AUpgraded Successor
successor cross-reference
successor
156887Upgraded Successor
successor cross-reference
successor
4000-16Interchangeable
interchangeable cross-reference
interchangeable
M83248/2-916Interchangeable
interchangeable cross-reference
interchangeable
17627Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN4-23A?
AN4-23A is a BOLT,MACHINE.
What parts can replace AN4-23A?
There are 12 known substitutes for AN4-23A: AN42B3A, AN42-3A, 156887 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AN4-23A?
AN4-23A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-151-1413. 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