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Technical Data Sheet
PartsTable / COMPONENT / AN173-10
AN173-10 ✓ 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,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, grip_length: 0.625 INCHES NOMINAL IN, head_height: 0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.1889 INCHES MINIMUM AND 0.1894 INCHES MAXIMUM IN, thread_length: 0.313 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-151-1944, 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
AN173-10
NSN: 5306-00-151-1944
FSC: 5306
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
materialSTEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4037 OR STEEL COMP 4140 OR STEEL COMP 4130 OVERALL
head_styleHEXAGON
grip_length0.625 INCHES NOMINAL IN
head_height0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.1889 INCHES MINIMUM AND 0.1894 INCHES MAXIMUM IN
thread_length0.313 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES BEARING SURFACE OF HEAD
fastener_length1.016 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN
hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
NSN5306-00-151-1944
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AN173-10 · 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
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
MINIMUM TENSILE STRENGTH: 125000 POUNDS PER SQUARE INCH LBS
•
HEAD STYLE: HEXAGON
•
MATERIAL: STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4037 OR STEEL COMP 4140 OR STEEL COMP 4130 OVERALL
•
THREAD QUANTITY PER INCH: 32
•
THREAD LENGTH: 0.313 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
THREAD CLASS: 3A A
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD DIAMETER0.190 INCHES IN
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH LBS
HEAD STYLEHEXAGON
MATERIALSTEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4037 OR STEEL COMP 4140 OR STEEL COMP 4130 OVERALL
THREAD QUANTITY PER INCH32
THREAD LENGTH0.313 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
THREAD CLASS3A A
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER0.891 INCHES NOMINAL ALL HOLES IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
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
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN173-10?
AN173-10 is a BOLT,CLOSE TOLERANCE.
What parts can replace AN173-10?
There are 20 known substitutes for AN173-10: AN173-21A, B6812, AN173H21A and 17 more. Substitute compatibility should be verified for your specific system.
Is AN173-10 still available?
AN173-10 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