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T5257 — REACTOR

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

T5257: REACTOR.

The REACTOR is a the manufacturer industrial component. Key specifications include overall_width: 2.375 INCHES MAXIMUM IN, inclosure_type: FULLY INCLOSED, overall_height: 3.343 INCHES MAXIMUM IN, overall_length: 2.750 INCHES MAXIMUM IN, inductance_type: MECHANICALLY ADJUSTABLE, mounting_method: THREADED STUD(S) SINGLE GROUP. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-433-3811, 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
T5257
NSN: 5310-00-433-3811
NIINs: 004333811, 013859388
FSC: 5310 — Nuts and Washers
CAGE: 79960 — ZENITH FUEL SYSTEMS LLC (USA)
SPECIFICATIONS
overall_width2.375 INCHES MAXIMUM IN
inclosure_typeFULLY INCLOSED
overall_height3.343 INCHES MAXIMUM IN
overall_length2.750 INCHES MAXIMUM IN
inductance_typeMECHANICALLY ADJUSTABLE
mounting_methodTHREADED STUD(S) SINGLE GROUP
frequency_rating60.0 HERTZ NOMINAL SINGLE COMPONENT
winding_quantity2 SINGLE COMPONENT
inductance_rating2.70 MILLIHENRIES MINIMUM AND 45.00 MILLIHENRIES MAXIMUM SINGLE COMPONENT ALL WINDING
nominal_thread_size0.138 INCHES SINGLE GROUP IN
reliability_indicatorNOT ESTABLISHED
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
NSN5310-00-433-3811
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: T5257 · 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
SUBSTITUTES & CROSS-REFERENCES 1
93-T52-57Same 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 T5257?
T5257 is a REACTOR.
What parts can replace T5257?
There is 1 known substitute for T5257: 93-T52-57. Substitute compatibility should be verified for your specific system.
What is the NSN for T5257?
T5257 is cataloged in the U.S. Government catalog under NSN 5310-00-433-3811. 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.