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Technical Data Sheet
PartsTable / COMPONENT / 149 ITEM 20
149 ITEM 20 ✓ 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 SCREW,MACHINE 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 5305-00-972-8809, 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
149 ITEM 20
NSN: 5305-00-972-8809
FSC: 5305
CAGE: K7018 — WELLMAN GROUP (GBR)
SPECIFICATIONS
Part Number149 ITEM 20
NSN5305-00-972-8809
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 149 ITEM 20 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
4118700-189Interchangeable
interchangeable cross-reference
interchangeable
MILC22557-15Interchangeable
interchangeable cross-reference
interchangeable
27-106Interchangeable
interchangeable cross-reference
interchangeable
PA4168Interchangeable
interchangeable cross-reference
interchangeable
PA4007Interchangeable
interchangeable cross-reference
interchangeable
M883Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 149 ITEM 20?
149 ITEM 20 is a SCREW,MACHINE.
What parts can replace 149 ITEM 20?
There are 18 known substitutes for 149 ITEM 20: 4118700-189, MILC22557-15, 27-106 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 149 ITEM 20?
149 ITEM 20 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-972-8809. 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