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10952040 — Technical Data Sheet

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— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1095 OVERALL, thickness: 0.092 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN, hole_diameter: 0.502 INCHES MINIMUM AND 0.512 INCHES MAXIMUM IN, heat_treatment: QUENCHED AND TEMPERED, surface_finish: 32.0 MICROINCHES TOP, hardness_rating: 82.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 83.9 ROCKWELL SUPERFICIAL 15-N MAXIMUM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5310-00-757-6906, 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
10952040
NSN: 5310-00-757-6906
FSC: 5310
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1095 OVERALL
thickness0.092 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
hole_diameter0.502 INCHES MINIMUM AND 0.512 INCHES MAXIMUM IN
heat_treatmentQUENCHED AND TEMPERED
surface_finish32.0 MICROINCHES TOP
hardness_rating82.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 83.9 ROCKWELL SUPERFICIAL 15-N MAXIMUM
overall_diameter0.907 INCHES MINIMUM AND 0.927 INCHES MAXIMUM IN
surface_treatmentNICKEL OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-757-6906
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10952040 · 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: 0.907 INCHES MINIMUM AND 0.927 INCHES MAXIMUM IN
•
HARDNESS RATING: 82.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 83.9 ROCKWELL SUPERFICIAL 15-N MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 1095 OVERALL
•
SURFACE FINISH: 32.0 MICROINCHES TOP
•
HEAT TREATMENT: QUENCHED AND TEMPERED
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.907 INCHES MINIMUM AND 0.927 INCHES MAXIMUM IN
HARDNESS RATING82.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 83.9 ROCKWELL SUPERFICIAL 15-N MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 1095 OVERALL
SURFACE FINISH32.0 MICROINCHES TOP
SURFACE FINISH32.0 MICROINCHES BOTTOM
HEAT TREATMENTQUENCHED AND TEMPERED
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.502 INCHES MINIMUM AND 0.512 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
04020114InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
4-440-100InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
4-20114InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
6640NCM010162InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
04-0115InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
HPNE4590-1M01InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10952040?
10952040 is a WASHER,FLAT.
What parts can replace 10952040?
There are 9 known substitutes for 10952040: 04020114, 4-440-100, 4-20114 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10952040?
10952040 is cataloged in the Federal Logistics Information System under NSN 5310-00-757-6906. This indicates validated use in U.S. government and defense supply chains.
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Last verified: October 2026