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51494 — TRANSFORMER,AUDIO FREQUENCY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

51494: TRANSFORMER,AUDIO FREQUENCY.

The TRANSFORMER,AUDIO FREQUENCY is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, body_width: 0.720 INCHES MAXIMUM IN, body_height: 0.790 INCHES MAXIMUM IN, body_length: 0.950 INCHES MAXIMUM IN, grip_length: 0.068 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN, actuation_type: PUSH. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-898-6491, 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
51494
NSN: 5315-00-898-6491
NIINs: 008986491, 010945864, 012765964, 012968692
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 84256 — AVIBANK MFG., INC. DBA AVIBANK MANUFACTURING INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
body_width0.720 INCHES MAXIMUM IN
body_height0.790 INCHES MAXIMUM IN
body_length0.950 INCHES MAXIMUM IN
grip_length0.068 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN
actuation_typePUSH
inclosure_typeFULLY INCLOSED
lanyard_length4.500 INCHES MINIMUM AND 5.500 INCHES MAXIMUM IN
shank_diameter0.1885 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN
connection_typeTHREADED EXTERNAL PIPE FIRST FLUID END CONNECTION
detent_quantity2
hardness_rating58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM DETENT
NSN5315-00-898-6491
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 51494 · 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
•
SHANK DIAMETER: 0.1885 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN
•
ACTUATION METHOD: PUSH BUTTON
•
DETENT TO TAPERED END DISTANCE: 1.020 INCHES NOMINAL IN
•
DETENT QUANTITY: 2
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SHANK
•
BUTTON HANDLE DIAMETER: 0.560 INCHES MAXIMUM IN
•
ACTUATION TYPE: PUSH
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.1885 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN
ACTUATION METHODPUSH BUTTON
DETENT TO TAPERED END DISTANCE1.020 INCHES NOMINAL IN
DETENT QUANTITY2
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SHANK
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SPINDLE
BUTTON HANDLE DIAMETER0.560 INCHES MAXIMUM IN
ACTUATION TYPEPUSH
HARDNESS RATING58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM DETENT
PIN ATTACHMENT TYPECABLE LANYARD W/TERMINATIONS
SUBSTITUTES & CROSS-REFERENCES 2
11697850Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
SL19526Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 51494?
51494 is a TRANSFORMER,AUDIO FREQUENCY.
What parts can replace 51494?
There are 2 known substitutes for 51494: 11697850, SL19526. Substitute compatibility should be verified for your specific system.
What is the NSN for 51494?
51494 is cataloged in the U.S. Government catalog under NSN 5315-00-898-6491. 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.