PartsTable
Technical Data Sheet
Download PDF

028347 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

028347: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1018 OR STEEL COMP 1019 OVERALL, thickness: 0.250 INCHES NOMINAL IN, hole_diameter: 1.030 INCHES MINIMUM AND 1.040 INCHES MAXIMUM IN, surface_finish: 40.0 MICROINCHES TOP, hardness_rating: 58.0 ROCKWELL C NOMINAL, overall_diameter: 1.937 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-443-6005, 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
028347
NSN: 5310-00-443-6005
FSC: 5310 — Nuts and Washers
CAGE: 77640 — ZF ACTIVE SAFETY AND ELECTRONICS US LLC DIV TRW COMMERCIAL STEERING SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL COMP 1018 OR STEEL COMP 1019 OVERALL
thickness0.250 INCHES NOMINAL IN
hole_diameter1.030 INCHES MINIMUM AND 1.040 INCHES MAXIMUM IN
surface_finish40.0 MICROINCHES TOP
hardness_rating58.0 ROCKWELL C NOMINAL
overall_diameter1.937 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationSAE ASSN STD ALL MATERIAL RESPONSES OVERALL
NSN5310-00-443-6005
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 028347 · 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 FINISH: 40.0 MICROINCHES TOP
•
OVERALL DIAMETER: 1.937 INCHES NOMINAL IN
•
HARDNESS RATING: 58.0 ROCKWELL C NOMINAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD ALL MATERIAL RESPONSES OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL COMP 1018 OR STEEL COMP 1019 OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH40.0 MICROINCHES TOP
SURFACE FINISH40.0 MICROINCHES BOTTOM
OVERALL DIAMETER1.937 INCHES NOMINAL IN
HARDNESS RATING58.0 ROCKWELL C NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD ALL MATERIAL RESPONSES OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL COMP 1018 OR STEEL COMP 1019 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER1.030 INCHES MINIMUM AND 1.040 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 028347?
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 028347?
028347 is a WASHER,FLAT.
What is the NSN for 028347?
028347 is cataloged in the U.S. Government catalog under NSN 5310-00-443-6005. 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 — 028347

✓ 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.