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855029 — WASHER,FLAT

✓ Government record, cited
MEGABLEU · NUT WASHER
PRODUCT OVERVIEW

855029: WASHER,FLAT.

The WASHER,FLAT is a MEGABLEU industrial component. Key specifications include material: STEEL COMP 1008 OR STEEL COMP 1010 OVERALL, thickness: 0.046 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN, hole_diameter: 0.256 INCHES MINIMUM AND 0.276 INCHES MAXIMUM IN, surface_treatment: ZINC AND DICHROMATE OVERALL, width_across_flats: 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN, peripheral_shape_style: HEXAGON. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-741-0270, 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
855029
NSN: 5310-00-741-0270
FSC: 5310 — Nuts and Washers
CAGE: 76040 — MACK TRUCKS INC PARTS OPN (USA)
SPECIFICATIONS
materialSTEEL COMP 1008 OR STEEL COMP 1010 OVERALL
thickness0.046 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN
hole_diameter0.256 INCHES MINIMUM AND 0.276 INCHES MAXIMUM IN
surface_treatmentZINC AND DICHROMATE OVERALL
width_across_flats0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
peripheral_shape_styleHEXAGON
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationSAE ASSN STD ALL MATERIAL RESPONSES OVERALL
NSN5310-00-741-0270
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 855029 · MEGABLEU ⚠ 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: 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD ALL MATERIAL RESPONSES OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE TREATMENT: ZINC AND DICHROMATE OVERALL
•
PERIPHERAL SHAPE STYLE: HEXAGON
•
MATERIAL: STEEL COMP 1008 OR STEEL COMP 1010 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.256 INCHES MINIMUM AND 0.276 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD ALL MATERIAL RESPONSES OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTZINC AND DICHROMATE OVERALL
PERIPHERAL SHAPE STYLEHEXAGON
MATERIALSTEEL COMP 1008 OR STEEL COMP 1010 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.256 INCHES MINIMUM AND 0.276 INCHES MAXIMUM IN
THICKNESS0.046 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 3
345362Reference document
Same NSN cross-reference
Reference document — Secondary reference
BB7913Reference document
Same NSN cross-reference
Reference document — Secondary reference
7410270Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 855029?
855029 is a WASHER,FLAT manufactured by MEGABLEU.
What parts can replace 855029?
There are 3 known substitutes for 855029: 345362, BB7913, 7410270. Substitute compatibility should be verified for your specific system.
What is the NSN for 855029?
855029 is cataloged in the U.S. Government catalog under NSN 5310-00-741-0270. 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.