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X145-4 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

X145-4: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1095 OVERALL, thickness: 0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN, hole_diameter: 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN, hardness_rating: 45.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM, overall_diameter: 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN, surface_treatment: CADMIUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-147-2055, 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
X145-4
NSN: 5310-00-147-2055
NIINs: 001472055, 011417101
FSC: 5310 — Nuts and Washers
CAGE: 28839 — TELEDYNE INDUSTRIES INC TELEDYNE POWER SYSTEMS DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 1095 OVERALL
thickness0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
hole_diameter0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
hardness_rating45.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
overall_diameter0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
surface_treatmentCADMIUM OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identification2330-01-303-8832 M1000 CHETTL TRAILER
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationAMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OR AMS 2800 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-147-2055
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: X145-4 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OR AMS 2800 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
OVERALL DIAMETER: 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE TREATMENT: CADMIUM OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL COMP 1095 OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OR AMS 2800 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
OVERALL DIAMETER0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTCADMIUM OVERALL
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL COMP 1095 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 3
27D76Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
CVC754-240S21Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
1-59431Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is X145-4?
X145-4 is a WASHER,FLAT.
What parts can replace X145-4?
There are 3 known substitutes for X145-4: 27D76, CVC754-240S21, 1-59431. Substitute compatibility should be verified for your specific system.
What is the NSN for X145-4?
X145-4 is cataloged in the U.S. Government catalog under NSN 5310-00-147-2055. This indicates validated use in U.S. government and defense supply chains.
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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.