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07621 — GUARD,MECHANICAL DRIVE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

07621: GUARD,MECHANICAL DRIVE.

The GUARD,MECHANICAL DRIVE is a the manufacturer industrial component. Key specifications include length: 0.600 INCHES NOMINAL IN, material: STEEL OVERALL, insert_size: 0.4375 IN OD IN, mounting_method: THREADED HOLE(S), style_designator: FLANGE, nominal_thread_size: 0.4375 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-939-6023, 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
07621
NSN: 5305-00-939-6023
NIINs: 009396023, 012436410, 014433502
FSC: 5305 — Screws
CAGE: 9P5N5 — MOOG MILITARY AIRCRAFT LLC (USA)
SPECIFICATIONS
length0.600 INCHES NOMINAL IN
materialSTEEL OVERALL
insert_size0.4375 IN OD IN
mounting_methodTHREADED HOLE(S)
style_designatorFLANGE
nominal_thread_size0.4375 INCHES IN
thread_quantity_per_inch20
thread_series_designatorUNF
NSN5305-00-939-6023
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 07621 · 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
•
HEAD HEIGHT: 0.075 INCHES NOMINAL IN
•
SCREW SURFACE TREATMENT: PASSIVATE
•
FASTENER LENGTH: 0.670 INCHES NOMINAL IN
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-7720 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18732 MIL SPEC 2ND MATERIAL RESPONSE
•
THREAD LENGTH: 0.200 INCHES MINIMUM IN
•
NOMINAL THREAD DIAMETER: 0.099 INCHES IN
•
HEAD STYLE: FLAT CHAMFER
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.075 INCHES NOMINAL IN
SCREW SURFACE TREATMENTPASSIVATE
FASTENER LENGTH0.670 INCHES NOMINAL IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7720 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18732 MIL SPEC 2ND MATERIAL RESPONSE
THREAD LENGTH0.200 INCHES MINIMUM IN
NOMINAL THREAD DIAMETER0.099 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL COMP 303 OR STEEL COMP 303SE
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
SUBSTITUTES & CROSS-REFERENCES 1
090-07621Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 07621?
07621 is a GUARD,MECHANICAL DRIVE.
What parts can replace 07621?
There is 1 known substitute for 07621: 090-07621. Substitute compatibility should be verified for your specific system.
What is the NSN for 07621?
07621 is cataloged in the U.S. Government catalog under NSN 5305-00-939-6023. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.