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P1900HP300 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

P1900HP300: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.136 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN, hole_diameter: 1.063 INCHES MINIMUM AND 1.126 INCHES MAXIMUM IN, outside_diameter: 1.937 INCHES MINIMUM AND 2.063 INCHES MAXIMUM IN, overall_diameter: 1.937 INCHES MINIMUM AND 2.063 INCHES MAXIMUM IN, special_features: HARDNESS TEST METHOD USING ASTM E18 HRC 38-45. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-697-8025, 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
P1900HP300
NSN: 5310-01-697-8025
FSC: 5310 — Nuts and Washers
CAGE: 0AAB6 — PRESTIGE STAMPING LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.136 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN
hole_diameter1.063 INCHES MINIMUM AND 1.126 INCHES MAXIMUM IN
outside_diameter1.937 INCHES MINIMUM AND 2.063 INCHES MAXIMUM IN
overall_diameter1.937 INCHES MINIMUM AND 2.063 INCHES MAXIMUM IN
special_featuresHARDNESS TEST METHOD USING ASTM E18 HRC 38-45
surface_treatmentZINC OVERALL
center_hole_length0.874 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
nondefinitive_spec/std_data0.86LB WEIGHT LBS
NSN5310-01-697-8025
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: P1900HP300 · 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
•
CENTER HOLE LENGTH: 0.874 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
•
OVERALL DIAMETER: 1.937 INCHES MINIMUM AND 2.063 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: F436 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OUTSIDE DIAMETER: 1.937 INCHES MINIMUM AND 2.063 INCHES MAXIMUM IN
•
NONDEFINITIVE SPEC/STD DATA: 0.86LB WEIGHT LBS
•
SURFACE TREATMENT: ZINC OVERALL
TECHNICAL CHARACTERISTICS
CENTER HOLE LENGTH0.874 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
OVERALL DIAMETER1.937 INCHES MINIMUM AND 2.063 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONF436 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER1.937 INCHES MINIMUM AND 2.063 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATA0.86LB WEIGHT LBS
SPECIAL FEATURESHARDNESS TEST METHOD USING ASTM E18 HRC 38-45
SURFACE TREATMENTZINC OVERALL
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL OVERALL
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 1
37570Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is P1900HP300?
P1900HP300 is a WASHER,FLAT.
What parts can replace P1900HP300?
There is 1 known substitute for P1900HP300: 37570. Substitute compatibility should be verified for your specific system.
What is the NSN for P1900HP300?
P1900HP300 is cataloged in the U.S. Government catalog under NSN 5310-01-697-8025. 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.