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C4WM1870-3 — WASHER,SHOULDERED AND RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

C4WM1870-3: WASHER,SHOULDERED AND RECESSED.

The WASHER,SHOULDERED AND RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, recess_angle: 45.0 DEGREES NOMINAL, hole_diameter: 0.320 INCHES NOMINAL IN, shoulder_height: 0.130 INCHES NOMINAL IN, outside_diameter: 1.000 INCHES NOMINAL IN, style_designator: SHOULDERED AND RECESSED. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-064-5566, 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
C4WM1870-3
NSN: 5310-00-064-5566
FSC: 5310 — Nuts and Washers
CAGE: 1C762 — DE HAVILLAND PARTS & AEROSTRUCTURES LIMITED DIV FIELD AVIATION (CAN)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
recess_angle45.0 DEGREES NOMINAL
hole_diameter0.320 INCHES NOMINAL IN
shoulder_height0.130 INCHES NOMINAL IN
outside_diameter1.000 INCHES NOMINAL IN
style_designatorSHOULDERED AND RECESSED
shoulder_diameter0.750 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
material_thickness0.050 INCHES NOMINAL IN
material_document_and_classificationMIL-S-6758,COND F MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-064-5566
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: C4WM1870-3 · 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
•
SHOULDER HEIGHT: 0.130 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SHOULDERED AND RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6758,COND F MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.000 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.050 INCHES NOMINAL IN
•
SHOULDER DIAMETER: 0.750 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL: STEEL COMP 4130 OVERALL
TECHNICAL CHARACTERISTICS
SHOULDER HEIGHT0.130 INCHES NOMINAL IN
STYLE DESIGNATORSHOULDERED AND RECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6758,COND F MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.000 INCHES NOMINAL IN
MATERIAL THICKNESS0.050 INCHES NOMINAL IN
SHOULDER DIAMETER0.750 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL COMP 4130 OVERALL
HOLE DIAMETER0.320 INCHES NOMINAL IN
RECESS ANGLE45.0 DEGREES NOMINAL
SUBSTITUTES & CROSS-REFERENCES 1
00636Same 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 C4WM1870-3?
C4WM1870-3 is a WASHER,SHOULDERED AND RECESSED.
What parts can replace C4WM1870-3?
There is 1 known substitute for C4WM1870-3: 00636. Substitute compatibility should be verified for your specific system.
What is the NSN for C4WM1870-3?
C4WM1870-3 is cataloged in the U.S. Government catalog under NSN 5310-00-064-5566. 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.