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PartsTable / COMPONENT / 51597-31
51597-31 ✓ 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 TRANSFORMER,AUDIO FREQUENCY is a the manufacturer industrial component. Key specifications include special_features: CARBONE CARBON GRADE MC65. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-675-9733, 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
51597-31
NSN: 5315-00-675-9733
FSC: 5315
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
special_featuresCARBONE CARBON GRADE MC65
general_characteristics_item_descriptionMATL STEEL,AMS 6320; HARDNESS PER 26-33 RC; LG 0.875 IN.; FIRST END FLAT HEAD 0.469 DIA,HOLE DRILL THRU 0.125 IN. REAM TO 0.134 IN.; 2ND END 0.4066 DIA IN
NSN5315-00-675-9733
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 51597-31 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: MATL STEEL,AMS 6320; HARDNESS PER 26-33 RC; LG 0.875 IN.; FIRST END FLAT HEAD 0.469 DIA,HOLE DRILL THRU 0.125 IN. REAM TO 0.134 IN.; 2ND END 0.4066 DIA IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONMATL STEEL,AMS 6320; HARDNESS PER 26-33 RC; LG 0.875 IN.; FIRST END FLAT HEAD 0.469 DIA,HOLE DRILL THRU 0.125 IN. REAM TO 0.134 IN.; 2ND END 0.4066 DIA IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
P-24Interchangeable
interchangeable cross-reference
interchangeable
515973-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 51597-31?
51597-31 is a TRANSFORMER,AUDIO FREQUENCY.
What parts can replace 51597-31?
There are 2 known substitutes for 51597-31: P-24, 515973-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 51597-31?
51597-31 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-675-9733. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026