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PartsTable / COMPONENT / 8161702
8161702 ✓ 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 WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.142 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN, hardness_rating: 45.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM, outside_diameter: 0.271 INCHES MINIMUM AND 0.287 INCHES MAXIMUM IN, style_designator: COUNTERSINK EXTERNAL TEETH, countersink_angle: 95.0 DEGREES MINIMUM AND 105.0 DEGREES MAXIMUM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-197-3136, 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
8161702
NSN: 5310-00-197-3136
FSC: 5310
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.142 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
hardness_rating45.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM
outside_diameter0.271 INCHES MINIMUM AND 0.287 INCHES MAXIMUM IN
style_designatorCOUNTERSINK EXTERNAL TEETH
countersink_angle95.0 DEGREES MINIMUM AND 105.0 DEGREES MAXIMUM
surface_treatmentCADMIUM OVERALL
material_thickness0.010 INCHES MINIMUM AND 0.014 INCHES MAXIMUM IN
surface_treatment_document_and_classificationQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-197-3136
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 8161702 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL THICKNESS: 0.010 INCHES MINIMUM AND 0.014 INCHES MAXIMUM IN
•
COUNTERSINK ANGLE: 95.0 DEGREES MINIMUM AND 105.0 DEGREES MAXIMUM
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM
•
OUTSIDE DIAMETER: 0.271 INCHES MINIMUM AND 0.287 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: COUNTERSINK EXTERNAL TEETH
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL THICKNESS0.010 INCHES MINIMUM AND 0.014 INCHES MAXIMUM IN
COUNTERSINK ANGLE95.0 DEGREES MINIMUM AND 105.0 DEGREES MAXIMUM
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM
OUTSIDE DIAMETER0.271 INCHES MINIMUM AND 0.287 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL OVERALL
STYLE DESIGNATORCOUNTERSINK EXTERNAL TEETH
HOLE DIAMETER0.142 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
12PInterchangeable
interchangeable cross-reference
interchangeable
15061Interchangeable
interchangeable cross-reference
interchangeable
44131Interchangeable
interchangeable cross-reference
interchangeable
C01049Interchangeable
interchangeable cross-reference
interchangeable
2001 61Interchangeable
interchangeable cross-reference
interchangeable
150601Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8161702?
8161702 is a WASHER,LOCK.
What parts can replace 8161702?
There are 19 known substitutes for 8161702: 12P, 15061, 44131 and 16 more. Substitute compatibility should be verified for your specific system.
Is 8161702 still available?
8161702 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