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PartsTable / COMPONENT / AN173H26
AN173H26 ✓ 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_height: 0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.406 INCHES MINIMUM IN, fastener_length: 2.781 INCHES NOMINAL IN, minimum_tensile_strength: 125000 POUNDS PER SQUARE INCH LBS, shank_unthreaded_hole_diameter: 0.070 INCHES NOMINAL FIRST HOLE IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-150-9097, 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
AN173H26
NSN: 5306-00-150-9097
FSC: 5306
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
head_height0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
thread_class3A A
thread_length0.406 INCHES MINIMUM IN
fastener_length2.781 INCHES NOMINAL IN
minimum_tensile_strength125000 POUNDS PER SQUARE INCH LBS
shank_unthreaded_hole_diameter0.070 INCHES NOMINAL FIRST HOLE IN
NSN5306-00-150-9097
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AN173H26 · 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
•
FASTENER LENGTH: 2.781 INCHES NOMINAL IN
•
SHANK UNTHREADED HOLE DIAMETER: 0.070 INCHES NOMINAL FIRST HOLE IN
•
HEAD HEIGHT: 0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.406 INCHES MINIMUM IN
•
MINIMUM TENSILE STRENGTH: 125000 POUNDS PER SQUARE INCH LBS
•
THREAD CLASS: 3A A
TECHNICAL CHARACTERISTICS (FLIS)
FASTENER LENGTH2.781 INCHES NOMINAL IN
SHANK UNTHREADED HOLE DIAMETER0.070 INCHES NOMINAL FIRST HOLE IN
HEAD HEIGHT0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
THREAD LENGTH0.406 INCHES MINIMUM IN
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH LBS
THREAD CLASS3A A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
MS20074-10-16Upgraded Successor
successor cross-reference
successor
MILB6812Upgraded Successor
successor cross-reference
successor
AN3-4Upgraded Successor
successor cross-reference
successor
85H30Upgraded Successor
successor cross-reference
successor
NASM6812Upgraded Successor
successor cross-reference
successor
AN5-40AUpgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN173H26?
AN173H26 is a BOLT,CLOSE TOLERANCE.
What parts can replace AN173H26?
There are 14 known substitutes for AN173H26: MS20074-10-16, MILB6812, AN3-4 and 11 more. Substitute compatibility should be verified for your specific system.
Is AN173H26 still available?
AN173H26 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