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D1420 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

D1420: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include length: 0.809 INCHES MINIMUM AND 0.849 INCHES MAXIMUM IN, material: STEEL OVERALL, nut_style: SLEEVE, nut_length: 0.642 INCHES NOMINAL IN, insert_size: 0.500 IN. DIA IN, nut_diameter: 0.500 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 5310-00-247-3360, 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
D1420
NSN: 5310-00-247-3360
NIINs: 002473360, 009632781, 009983264, 016919517
FSC: 5310 — Nuts and Washers
CAGE: 03018 — S W ANDERSON CO (USA)
SPECIFICATIONS
length0.809 INCHES MINIMUM AND 0.849 INCHES MAXIMUM IN
materialSTEEL OVERALL
nut_styleSLEEVE
nut_length0.642 INCHES NOMINAL IN
insert_size0.500 IN. DIA IN
nut_diameter0.500 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
flange_diameter0.750 INCHES NOMINAL IN
flange_thickness0.172 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN
special_featuresSTYLE DESIGNATOR:NO.60 IRREGULAR SHAPE FROM FIIG A03200
style_designatorFLANGE
NSN5310-00-247-3360
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: D1420 · 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
•
FLANGE DIAMETER: 0.750 INCHES NOMINAL IN
•
NUT LENGTH: 0.642 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.187 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
NUT DIAMETER: 0.500 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE: ROUND FLANGE
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER0.750 INCHES NOMINAL IN
NUT LENGTH0.642 INCHES NOMINAL IN
FLANGE THICKNESS0.187 INCHES NOMINAL IN
THREAD SERIESUNF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.250 INCHES IN
NUT DIAMETER0.500 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPEROUND FLANGE
CROSS-SECTIONAL SHAPEROUND NUT
NUT STYLESLEEVE
SUBSTITUTES & CROSS-REFERENCES 3
10088014Reference document
Same NSN cross-reference
Reference document — Informative reference only
11621156Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
13211E9040Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 D1420?
D1420 is a WASHER,FLAT.
What parts can replace D1420?
There are 3 known substitutes for D1420: 10088014, 11621156, 13211E9040. Substitute compatibility should be verified for your specific system.
What is the NSN for D1420?
D1420 is cataloged in the U.S. Government catalog under NSN 5310-00-247-3360. 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.