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Technical Data Sheet
PartsTable / COMPONENT / AN7-25A
AN7-25A ✓ 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: 2.047 INCHES MINIMUM AND 2.078 INCHES MAXIMUM IN, head_height: 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.625 INCHES MINIMUM AND 0.703 INCHES MAXIMUM IN, fastener_length: 2.703 INCHES MINIMUM AND 2.750 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-208-1359, 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
AN7-25A
NSN: 5306-00-208-1359
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_length2.047 INCHES MINIMUM AND 2.078 INCHES MAXIMUM IN
head_height0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
thread_class3A A
thread_length0.625 INCHES MINIMUM AND 0.703 INCHES MAXIMUM IN
fastener_length2.703 INCHES MINIMUM AND 2.750 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_flats0.615 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN
NSN5306-00-208-1359
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AN7-25A · 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 LENGTH: 0.625 INCHES MINIMUM AND 0.703 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
•
WIDTH BETWEEN FLATS: 0.615 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN
•
THREAD QUANTITY PER INCH: 20
•
THREAD CLASS: 3A A
•
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 AMS 6300 ASSN STD 6TH MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.438 INCHES IN
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH0.625 INCHES MINIMUM AND 0.703 INCHES MAXIMUM IN
HEAD HEIGHT0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS0.615 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH20
THREAD CLASS3A A
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 AMS 6300 ASSN STD 6TH MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.438 INCHES IN
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM 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
GRIP LENGTH2.047 INCHES MINIMUM AND 2.078 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
AN4-31AUpgraded Successor
successor cross-reference
successor
5306PL0961538Upgraded Successor
successor cross-reference
successor
MILB6812AAMEND2Upgraded Successor
successor cross-reference
successor
AN5-31AUpgraded Successor
successor cross-reference
successor
AN5-30AUpgraded Successor
successor cross-reference
successor
AN5-24AUpgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN7-25A?
AN7-25A is a BOLT,MACHINE.
What parts can replace AN7-25A?
There are 15 known substitutes for AN7-25A: AN4-31A, 5306PL0961538, MILB6812AAMEND2 and 12 more. Substitute compatibility should be verified for your specific system.
Is AN7-25A still available?
AN7-25A 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