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Technical Data Sheet
PartsTable / COMPONENT / A7521.012.156
A7521.012.156 ✓ 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 A7521.012.156 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-113-3059, 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
A7521.012.156
NSN: 5305-01-113-3059
FSC: 5305
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
Part NumberA7521.012.156
NSN5305-01-113-3059
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: A7521.012.156 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STAINLESS STEEL,QQ-S-764,CLASS 303
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTAINLESS STEEL,QQ-S-764,CLASS 303
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
80907Interchangeable
interchangeable cross-reference
interchangeable
3842027C91Interchangeable
interchangeable cross-reference
interchangeable
3673295C91Interchangeable
interchangeable cross-reference
interchangeable
78932Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A7521.012.156?
A7521.012.156 is a A7521.012.156.
What parts can replace A7521.012.156?
There are 4 known substitutes for A7521.012.156: 80907, 3842027C91, 3673295C91 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A7521.012.156?
A7521.012.156 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-113-3059. 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