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7-949-000359 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

7-949-000359: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include thickness: 0.136 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN, hole_diameter: 1.055 INCHES MINIMUM AND 1.092 INCHES MAXIMUM IN, hardness_rating: 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM, overall_diameter: 1.993 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-189-8478, 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
7-949-000359
NSN: 5310-01-189-8478
FSC: 5310 — Nuts and Washers
CAGE: 12361 — GROVE U.S. LLC DBA GROVE US LLC (USA)
SPECIFICATIONS
materialSTEEL UNS K02706 OR STEEL UNS K11900 OR STEEL UNS K12033 OR STEEL UNS K12059 OR STEEL UNS K12238 OR STEEL UNS K12254 OR STEEL UNS K13643 OR STEEL UNS K14358 OR STEEL UNS K03900 OVERALL
thickness0.136 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN
hole_diameter1.055 INCHES MINIMUM AND 1.092 INCHES MAXIMUM IN
hardness_rating36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
overall_diameter1.993 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-01-189-8478
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 7-949-000359 · 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
•
OVERALL DIAMETER: 1.993 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN
•
HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A325 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A325 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A325 ASSN STD 3RD MATERIAL RESPONSE OR ASTM A325 ASSN STD 4TH MATERIAL RESPONSE OR ASTM A325 ASSN STD 5TH MATERIAL RESPONSE OR ASTM A325 ASSN STD 6TH MATERIAL RESPONSE OR ASTM A325 ASSN STD 7TH MATERIAL RESPONSE OR ASTM A325 ASSN STD 8TH MATERIAL RESPONSE OR ASTM A490 ASSN STD 9TH MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL UNS K02706 OR STEEL UNS K11900 OR STEEL UNS K12033 OR STEEL UNS K12059 OR STEEL UNS K12238 OR STEEL UNS K12254 OR STEEL UNS K13643 OR STEEL UNS K14358 OR STEEL UNS K03900 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 1.055 INCHES MINIMUM AND 1.092 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER1.993 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A325 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A325 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A325 ASSN STD 3RD MATERIAL RESPONSE OR ASTM A325 ASSN STD 4TH MATERIAL RESPONSE OR ASTM A325 ASSN STD 5TH MATERIAL RESPONSE OR ASTM A325 ASSN STD 6TH MATERIAL RESPONSE OR ASTM A325 ASSN STD 7TH MATERIAL RESPONSE OR ASTM A325 ASSN STD 8TH MATERIAL RESPONSE OR ASTM A490 ASSN STD 9TH MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL UNS K02706 OR STEEL UNS K11900 OR STEEL UNS K12033 OR STEEL UNS K12059 OR STEEL UNS K12238 OR STEEL UNS K12254 OR STEEL UNS K13643 OR STEEL UNS K14358 OR STEEL UNS K03900 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER1.055 INCHES MINIMUM AND 1.092 INCHES MAXIMUM IN
THICKNESS0.136 INCHES MINIMUM AND 0.177 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 2
2CD866Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
27E16Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7-949-000359?
7-949-000359 is a WASHER,FLAT.
What parts can replace 7-949-000359?
There are 2 known substitutes for 7-949-000359: 2CD866, 27E16. Substitute compatibility should be verified for your specific system.
What is the NSN for 7-949-000359?
7-949-000359 is cataloged in the U.S. Government catalog under NSN 5310-01-189-8478. 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.