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W13 — HEATER,THERMAL RELEASE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

W13: HEATER,THERMAL RELEASE.

The HEATER,THERMAL RELEASE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 2.594 INCHES NOMINAL IN, hardness_rating: 50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM, outside_diameter: 3.375 INCHES NOMINAL IN, special_features: 1 KEY TYPE TOOTH LOCATED ON ID SURFACE, style_designator: FLAT EXTERNAL TEETH. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-186-0972, 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
W13
NSN: 5310-00-186-0972
NIINs: 001860972, 005147724, 014149133
FSC: 5310 — Nuts and Washers
CAGE: 21444 — REXNORD INDUSTRIES LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter2.594 INCHES NOMINAL IN
hardness_rating50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
outside_diameter3.375 INCHES NOMINAL IN
special_features1 KEY TYPE TOOTH LOCATED ON ID SURFACE
style_designatorFLAT EXTERNAL TEETH
material_thickness0.063 INCHES NOMINAL IN
external_key_quantity19
end_item_identificationCONTROLLER, AC P/N 0101-320-01-236 ONBOARD 225 FT WLB COAST GUARD VESSELS FT
external_prebent_key_width0.204 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
internal_prebent_key_width0.250 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
internal_prebent_key_length0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
NSN5310-00-186-0972
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: W13 · 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
•
INTERNAL PREBENT KEY WIDTH: 0.250 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
•
OVERALL DISTANCE INCLUDING KEYS: 3.578 INCHES MAXIMUM IN
•
HARDNESS RATING: 50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
•
STYLE DESIGNATOR: KEY
•
OUTSIDE DIAMETER: 3.062 INCHES MINIMUM AND 3.092 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN
•
EXTERNAL KEY QUANTITY: 19
•
INTERNAL PREBENT KEY LENGTH: 0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
INTERNAL PREBENT KEY WIDTH0.250 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS3.578 INCHES MAXIMUM IN
HARDNESS RATING50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
STYLE DESIGNATORKEY
OUTSIDE DIAMETER3.062 INCHES MINIMUM AND 3.092 INCHES MAXIMUM IN
MATERIAL THICKNESS0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY19
INTERNAL PREBENT KEY LENGTH0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
EXTERNAL PREBENT KEY WIDTH0.204 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
MATERIALSTEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OVERALL
SUBSTITUTES & CROSS-REFERENCES 8
08-949-786PC153TReference document
Same NSN cross-reference
Reference document — Secondary reference
D7103PC33Reference document
Same NSN cross-reference
Reference document — Secondary reference
R7364PCW13Reference document
Same NSN cross-reference
Reference document — Secondary reference
21002BReference document
Same NSN cross-reference
Reference document — Secondary reference
95938Reference document
Same NSN cross-reference
Reference document — Secondary reference
800324PC39Reference 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 W13?
W13 is a HEATER,THERMAL RELEASE.
What parts can replace W13?
There are 8 known substitutes for W13: 08-949-786PC153T, D7103PC33, R7364PCW13 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for W13?
W13 is cataloged in the U.S. Government catalog under NSN 5310-00-186-0972. This indicates validated use in U.S. government and defense supply chains.
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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.