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PartsTable / COMPONENT / 52-040-187-0687
52-040-187-0687 ✓ Verified by PartsTable
— · 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 PIN,SPRING is a the manufacturer industrial component. Key specifications include diameter: 0.194 INCHES MINIMUM AND 0.199 INCHES MAXIMUM IN, material: STEEL COMP 1070 OR STEEL COMP 1074 OR STEEL COMP 1080 OR STEEL COMP 1086 OR STEEL COMP 1095 OVERALL, overall_length: 0.672 INCHES MINIMUM AND 0.702 INCHES MAXIMUM IN, shear_strength: 4400 DOUBLE POUND, hardness_rating: 46.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL, style_designator: SLOTTED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-292-9636, 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
52-040-187-0687
NSN: 5315-00-292-9636
FSC: 5315
CAGE: 72962 — HARVARD INDUSTRIES INC (USA)
SPECIFICATIONS
diameter0.194 INCHES MINIMUM AND 0.199 INCHES MAXIMUM IN
materialSTEEL COMP 1070 OR STEEL COMP 1074 OR STEEL COMP 1080 OR STEEL COMP 1086 OR STEEL COMP 1095 OVERALL
overall_length0.672 INCHES MINIMUM AND 0.702 INCHES MAXIMUM IN
shear_strength4400 DOUBLE POUND
hardness_rating46.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
style_designatorSLOTTED
surface_treatmentCADMIUM AND CHROMATE OVERALL
material_thickness0.055 INCHES NOMINAL IN
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES OVERALL
surface_treatment_document_and_classificationQQ-P-416,TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5315-00-292-9636
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 52-040-187-0687 · 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
•
DIAMETER: 0.194 INCHES MINIMUM AND 0.199 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.055 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1070 OR STEEL COMP 1074 OR STEEL COMP 1080 OR STEEL COMP 1086 OR STEEL COMP 1095 OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
HARDNESS RATING: 46.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
DIAMETER0.194 INCHES MINIMUM AND 0.199 INCHES MAXIMUM IN
MATERIAL THICKNESS0.055 INCHES NOMINAL IN
MATERIALSTEEL COMP 1070 OR STEEL COMP 1074 OR STEEL COMP 1080 OR STEEL COMP 1086 OR STEEL COMP 1095 OVERALL
OVERALL LENGTH0.672 INCHES MINIMUM AND 0.702 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING46.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
STYLE DESIGNATORSLOTTED
SHEAR STRENGTH4400 DOUBLE POUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
NAS56156-12Interchangeable
interchangeable cross-reference
interchangeable
0495-110Interchangeable
interchangeable cross-reference
interchangeable
915989Interchangeable
interchangeable cross-reference
interchangeable
TYPE1Interchangeable
interchangeable cross-reference
interchangeable
14415Interchangeable
interchangeable cross-reference
interchangeable
MIL-P-10971 TY1CPAInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 52-040-187-0687?
52-040-187-0687 is a PIN,SPRING.
What parts can replace 52-040-187-0687?
There are 20 known substitutes for 52-040-187-0687: NAS56156-12, 0495-110, 915989 and 17 more. Substitute compatibility should be verified for your specific system.
Is 52-040-187-0687 still available?
52-040-187-0687 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026