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Technical Data Sheet
PartsTable / COMPONENT / PM21401
PM21401 ✓ 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,SELF TAPPING is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-623-5408, 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
PM21401
NSN: 5305-00-623-5408
FSC: 5305
CAGE: 81579 — MASON ELECTRIC CO. DBA MASON CONTROLS (USA)
SPECIFICATIONS
Part NumberPM21401
NSN5305-00-623-5408
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: PM21401 · 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 10
21401Interchangeable
interchangeable cross-reference
interchangeable
812C1Interchangeable
interchangeable cross-reference
interchangeable
1219893Interchangeable
interchangeable cross-reference
interchangeable
8225Interchangeable
interchangeable cross-reference
interchangeable
D-381-SInterchangeable
interchangeable cross-reference
interchangeable
250-21215 ITEM 12Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PM21401?
PM21401 is a SCREW,SELF TAPPING.
What parts can replace PM21401?
There are 10 known substitutes for PM21401: 21401, 812C1, 1219893 and 7 more. Substitute compatibility should be verified for your specific system.
Is PM21401 still available?
PM21401 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