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Technical Data Sheet
PartsTable / COMPONENT / 257700
257700 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The TRANSFORMER,AUDIO FREQUENCY is a the manufacturer industrial component. Key specifications include body_width: 1.625 INCHES NOMINAL IN, body_height: 2.375 INCHES NOMINAL IN, body_length: 1.625 INCHES NOMINAL IN, inclosure_type: HERMETICALLY SEALED, overall_height: 2.750 INCHES NOMINAL IN, mounting_method: THREADED STUD(S) SINGLE GROUP. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-565-2615, 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
257700
NSN: 5325-00-565-2615
FSC: 5325
CAGE: 0B6S1 — INTERNATIONAL BUSINESS MACHINES CORP PARTS ORDER CENTER DEPT E - 54 (USA)
SPECIFICATIONS
body_width1.625 INCHES NOMINAL IN
body_height2.375 INCHES NOMINAL IN
body_length1.625 INCHES NOMINAL IN
inclosure_typeHERMETICALLY SEALED
overall_height2.750 INCHES NOMINAL IN
mounting_methodTHREADED STUD(S) SINGLE GROUP
frequency_rating40.0 HERTZ MINIMUM AND 30.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
nominal_thread_size0.138 INCHES SINGLE GROUP IN
reliability_indicatorNOT ESTABLISHED
impedance_rating_in_ohms10000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
thread_quantity_per_inch32 SINGLE GROUP
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
NSN5325-00-565-2615
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 257700 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
1002AInterchangeable
interchangeable cross-reference
interchangeable
39917Interchangeable
interchangeable cross-reference
interchangeable
TR1002AInterchangeable
interchangeable cross-reference
interchangeable
60488Interchangeable
interchangeable cross-reference
interchangeable
59873AInterchangeable
interchangeable cross-reference
interchangeable
SM-C-187736Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 257700?
257700 is a TRANSFORMER,AUDIO FREQUENCY.
What parts can replace 257700?
There are 10 known substitutes for 257700: 1002A, 39917, TR1002A and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 257700?
257700 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-565-2615. 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