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27686PC7 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

27686PC7: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include hole_diameter: 0.801 INCHES MINIMUM AND 0.816 INCHES MAXIMUM IN, hardness_rating: 50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM, outside_diameter: 1.110 INCHES MINIMUM AND 1.140 INCHES MAXIMUM IN, style_designator: KEY, surface_treatment: CADMIUM OR ZINC OVERALL, material_thickness: 0.038 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-226-5978, 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
27686PC7
NSN: 5310-00-226-5978
FSC: 5310 — Nuts and Washers
CAGE: 01425 — LOUIS ALLIS CO THE THIS COMPANY HAS GONE BANKRUPT AND HAS BEEN PURCHASED BY 3 COMPANIES (USA)
SPECIFICATIONS
hole_diameter0.801 INCHES MINIMUM AND 0.816 INCHES MAXIMUM IN
hardness_rating50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
outside_diameter1.110 INCHES MINIMUM AND 1.140 INCHES MAXIMUM IN
style_designatorKEY
surface_treatmentCADMIUM OR ZINC OVERALL
material_thickness0.038 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN
external_key_quantity11
external_prebent_key_width0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
internal_prebent_key_width0.156 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
internal_prebent_key_length0.062 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
overall_distance_including_keys1.531 INCHES MAXIMUM IN
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES OVERALL
NSN5310-00-226-5978
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 27686PC7 · 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 TY2 CL3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 TY2 CL3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
•
INTERNAL PREBENT KEY WIDTH: 0.156 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
•
OVERALL DISTANCE INCLUDING KEYS: 1.531 INCHES MAXIMUM IN
•
HARDNESS RATING: 50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
OUTSIDE DIAMETER: 1.110 INCHES MINIMUM AND 1.140 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.038 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY2 CL3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 TY2 CL3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
INTERNAL PREBENT KEY WIDTH0.156 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS1.531 INCHES MAXIMUM IN
HARDNESS RATING50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
OUTSIDE DIAMETER1.110 INCHES MINIMUM AND 1.140 INCHES MAXIMUM IN
MATERIAL THICKNESS0.038 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY11
INTERNAL PREBENT KEY LENGTH0.062 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 8
13AD6D1084CPC29Reference document
Same NSN cross-reference
Reference document — Secondary reference
D8904PC36Reference document
Same NSN cross-reference
Reference document — Secondary reference
3F1905PC48Reference document
Same NSN cross-reference
Reference document — Secondary reference
D15-651QPC841Reference document
Same NSN cross-reference
Reference document — Secondary reference
D15-631LPC741Reference document
Same NSN cross-reference
Reference document — Secondary reference
D15-699BPC841Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 27686PC7?
27686PC7 is a WASHER,KEY.
What parts can replace 27686PC7?
There are 8 known substitutes for 27686PC7: 13AD6D1084CPC29, D8904PC36, 3F1905PC48 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 27686PC7?
27686PC7 is cataloged in the U.S. Government catalog under NSN 5310-00-226-5978. 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.