PartsTable
Technical Data Sheet
Download PDF

451057 — DRIVE ASSEMBLY,ARM,

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

451057: DRIVE ASSEMBLY,ARM,.

The DRIVE ASSEMBLY,ARM, is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_height: 0.187 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), locking_feature: FREE-RUNNING ALL METAL DESIGN, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-045-1057, 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
451057
NSN: 5310-00-045-1057
NIINs: 000451057, 003888927
FSC: 5310 — Nuts and Washers
CAGE: 82617 — UNITED LENS CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_height0.187 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
locking_featureFREE-RUNNING ALL METAL DESIGN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND ZINC OVERALL
width_across_flats0.500 INCHES NOMINAL IN
nominal_thread_size0.312 INCHES IN
thread_quantity_per_inch18
NSN5310-00-045-1057
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 451057 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
WIDTH ACROSS FLATS: 0.500 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.312 INCHES IN
•
LOCKING FEATURE: FREE-RUNNING ALL METAL DESIGN
•
NUT HEIGHT: 0.187 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM AND ZINC OVERALL
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.500 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.312 INCHES IN
LOCKING FEATUREFREE-RUNNING ALL METAL DESIGN
NUT HEIGHT0.187 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM AND ZINC OVERALL
THREAD CLASS2B
THREAD QUANTITY PER INCH18
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
145025Reference document
Same NSN cross-reference
Reference document — Secondary reference
398371Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 451057?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 451057?
451057 is a DRIVE ASSEMBLY,ARM,.
What parts can replace 451057?
There are 2 known substitutes for 451057: 145025, 398371. Substitute compatibility should be verified for your specific system.
What is the NSN for 451057?
451057 is cataloged in the U.S. Government catalog under NSN 5310-00-045-1057. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 451057

✓ 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.