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A451 — BLOCK,MOUNTING,ACTU

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

A451: BLOCK,MOUNTING,ACTU.

The BLOCK,MOUNTING,ACTU is a the manufacturer industrial component. Key specifications include special_features: COMPANY ITEM NAME--TEST SET, PICK OFF C, reference_data_and_literature: T.O. 33D2-6-81-21.

This part is cataloged in the U.S. Government catalog under NSN 5365-00-179-9485, 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
A451
NSN: 5365-00-179-9485
NIINs: 001799485, 006937930, 009235952
FSC: 5365 — Bushings, Rings, Shims, and Spacers
CAGE: 86928 — SEASTROM MANUFACTURING CO INC (USA)
SPECIFICATIONS
special_featuresCOMPANY ITEM NAME--TEST SET, PICK OFF C
reference_data_and_literatureT.O. 33D2-6-81-21
NSN5365-00-179-9485
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BLOCK,MOUNTING,ACTU TITLE COMPONENT PN A451 MFR BLOCK,MOUNTING,ACTU
KEY FEATURES
•
OUTSIDE DIAMETER: 0.750 INCHES NOMINAL IN
•
APERTURE DIAMETER: 0.125 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM ALLOY
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER0.750 INCHES NOMINAL IN
APERTURE DIAMETER0.125 INCHES NOMINAL IN
MATERIALALUMINUM ALLOY
SUBSTITUTES & CROSS-REFERENCES 3
978415-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
CN-T0018-001Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
430127Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A451?
A451 is a BLOCK,MOUNTING,ACTU.
What parts can replace A451?
There are 3 known substitutes for A451: 978415-1, CN-T0018-001, 430127. Substitute compatibility should be verified for your specific system.
What is the NSN for A451?
A451 is cataloged in the U.S. Government catalog under NSN 5365-00-179-9485. 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.