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Technical Data Sheet
PartsTable / COMPONENT / 61621-4
61621-4 ✓ 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: 0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN, insert_size: 0.138-40 UNF CLASS 3A A, style_designator: SERRATED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-085-4484, 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
61621-4
NSN: 5325-00-085-4484
FSC: 5325
CAGE: 22915 — NORTHROP GRUMMAN CORP ELECTRONIC SYSTEMS DEFENSIVE SYSTEM DIV (USA)
SPECIFICATIONS
length0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
insert_size0.138-40 UNF CLASS 3A A
style_designatorSERRATED
NSN5325-00-085-4484
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 61621-4 · 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
•
STYLE DESIGNATOR: SERRATED
•
INSERT SIZE: 0.138-40 UNF CLASS 3A A
•
LENGTH: 0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSERRATED
INSERT SIZE0.138-40 UNF CLASS 3A A
LENGTH0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
70-805199-3Interchangeable
interchangeable cross-reference
interchangeable
988016-2Interchangeable
interchangeable cross-reference
interchangeable
412933-6Interchangeable
interchangeable cross-reference
interchangeable
935270-1Interchangeable
interchangeable cross-reference
interchangeable
9-208Interchangeable
interchangeable cross-reference
interchangeable
7118795-1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 61621-4?
61621-4 is a INSERT,SCREW THREAD.
What parts can replace 61621-4?
There are 9 known substitutes for 61621-4: 70-805199-3, 988016-2, 412933-6 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 61621-4?
61621-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-085-4484. 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