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H851R — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

H851R: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 1100 OVERALL, hole_diameter: 1.141 INCHES NOMINAL IN, hardness_rating: 22.0 BRINELL HULTGREN MINIMUM AND 31.0 BRINELL HULTGREN MAXIMUM, overall_diameter: 1.406 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-327-9710, 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
H851R
NSN: 5310-01-327-9710
FSC: 5310 — Nuts and Washers
CAGE: 75755 — DEERE & COMPANY DBA DEERE JOHN CO (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 1100 OVERALL
hole_diameter1.141 INCHES NOMINAL IN
hardness_rating22.0 BRINELL HULTGREN MINIMUM AND 31.0 BRINELL HULTGREN MAXIMUM
overall_diameter1.406 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
NSN5310-01-327-9710
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: H851R · 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: 1.406 INCHES NOMINAL IN
•
HARDNESS RATING: 22.0 BRINELL HULTGREN MINIMUM AND 31.0 BRINELL HULTGREN MAXIMUM
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: ALUMINUM ALLOY 1100 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 1.141 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER1.406 INCHES NOMINAL IN
HARDNESS RATING22.0 BRINELL HULTGREN MINIMUM AND 31.0 BRINELL HULTGREN MAXIMUM
PERIPHERAL SHAPE STYLEROUND
MATERIALALUMINUM ALLOY 1100 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER1.141 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
H851Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is H851R?
H851R is a WASHER,FLAT.
What parts can replace H851R?
There is 1 known substitute for H851R: H851. Substitute compatibility should be verified for your specific system.
What is the NSN for H851R?
H851R is cataloged in the U.S. Government catalog under NSN 5310-01-327-9710. 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.