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Technical Data Sheet
PartsTable / COMPONENT / 3591-7CNW0438
3591-7CNW0438 ✓ 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 INSERT,SCREW THREAD is a the manufacturer industrial component. Key specifications include length: 0.438 INCHES NOMINAL IN, insert_size: 0.524 IN. MIN,0.549 IN.

MAX FREE OD IN, style_designator: COIL. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-541-9054, 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
3591-7CNW0438
NSN: 5325-00-541-9054
FSC: 5325
CAGE: 01556 — STANLEY ENGINEERED FASTENING LLC (USA)
SPECIFICATIONS
length0.438 INCHES NOMINAL IN
insert_size0.524 IN. MIN,0.549 IN. MAX FREE OD IN
style_designatorCOIL
NSN5325-00-541-9054
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3591-7CNW0438 · 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
•
LENGTH: 0.438 INCHES NOMINAL IN
•
STYLE DESIGNATOR: COIL
•
INSERT SIZE: 0.524 IN. MIN,0.549 IN. MAX FREE OD IN
TECHNICAL CHARACTERISTICS (FLIS)
LENGTH0.438 INCHES NOMINAL IN
STYLE DESIGNATORCOIL
INSERT SIZE0.524 IN. MIN,0.549 IN. MAX FREE OD IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
MS21209F0240Interchangeable
interchangeable cross-reference
interchangeable
MS21209F0420Interchangeable
interchangeable cross-reference
interchangeable
NASM8846Interchangeable
interchangeable cross-reference
interchangeable
218184-8Interchangeable
interchangeable cross-reference
interchangeable
218184Interchangeable
interchangeable cross-reference
interchangeable
6-6WBI2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3591-7CNW0438?
3591-7CNW0438 is a INSERT,SCREW THREAD.
What parts can replace 3591-7CNW0438?
There are 10 known substitutes for 3591-7CNW0438: MS21209F0240, MS21209F0420, NASM8846 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3591-7CNW0438?
3591-7CNW0438 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-541-9054. 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