PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

31257Coil,radio Frequency

Pax Mfg Corp Hammarlund Mfg Co Div · NSN 5950-00-257-3133 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-257-3133 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-257-3133. Primary manufacturer part number: 31257.
Features
  • Coil,radio Frequency — FSC 5950
  • Terminal Type and Quantity: 2 TAB, SOLDER LUG
  • Winding Conductor Size: 0.03196 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE WINDING IN
  • Mounting Method: UNTHREADED HOLE(S) SINGLE GROUP
  • Mounting Facility Quantity: 2 SINGLE GROUP
  • Turn Quantity: 8 5/6 SINGLE COMPONENT SINGLE WINDING
  • Mounting Hole Diameter: 0.128 INCHES NOMINAL SINGLE GROUP IN
  • Body Outside Diameter: 0.545 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coil,radio Frequency, cataloged under National Stock Number 5950-00-257-3133, is classified within Federal Supply Class 5950 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Pax Mfg Corp Hammarlund Mfg Co Div. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-00-257-3133
Primary Part Number31257
Item NameCoil,radio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerPax Mfg Corp Hammarlund Mfg Co Div
StatusCANCELLED
Terminal Type and Quantity2 TAB, SOLDER LUG
Winding Conductor Size0.03196 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE WINDING IN
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Mounting Facility Quantity2 SINGLE GROUP
Turn Quantity8 5/6 SINGLE COMPONENT SINGLE WINDING
Mounting Hole Diameter0.128 INCHES NOMINAL SINGLE GROUP IN
Body Outside Diameter0.545 INCHES NOMINAL IN
Inclosure TypeOPEN
Body Length1.438 INCHES NOMINAL IN
Coil Form TypeHOLLOW SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5940-00-156-712831257 INTERCHANGEABLE
Terminal,lug
Te Connectivity Corporation
5310-00-400-5503MS35650-3254 INTERCHANGEABLE
Nut,plain,hexagon
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5910-00-519-9134312-0057 INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
Cummins Power Generation Inc.
4820-00-542-2370179162 INTERCHANGEABLE
Cock,drain
Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
5136-01-046-885723312 INTERCHANGEABLE
Die,thread Cutting
Greenfield Industries Inc
5930-01-290-8818 INTERCHANGEABLE
Switch,lock
7520-01-598-9095BG212BLU INTERCHANGEABLE
Pen,ball-Point
Pilot Corporation of America
Cross-Reference Index
Part NumberManufacturer
31257 PRIMARY Pax Mfg Corp Hammarlund Mfg Co Div (USA)
Related Parts
5940-00-156-7128INTERCHANGEABLE
TERMINAL,LUG
31257
5310-00-400-5503INTERCHANGEABLE
NUT,PLAIN,HEXAGON
MS35650-3254
5910-00-519-9134INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
312-0057
4820-00-542-2370INTERCHANGEABLE
COCK,DRAIN
179162
5136-01-046-8857INTERCHANGEABLE
DIE,THREAD CUTTING
23312
5930-01-290-8818INTERCHANGEABLE
SWITCH,LOCK
7520-01-598-9095INTERCHANGEABLE
PEN,BALL-POINT
BG212BLU

Frequently Asked Questions

What is NSN 5950-00-257-3133?

NSN 5950-00-257-3133 is a Coil,radio Frequency, manufactured by Pax Mfg Corp Hammarlund Mfg Co Div, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-257-3133?

NSN 5950-00-257-3133 has 1 cross-referenced part number: 31257 (Pax Mfg Corp Hammarlund Mfg Co Div).

What NSN replaces 5950-00-257-3133?

There are 7 known substitutes for 5950-00-257-3133: 5940-00-156-7128, 5310-00-400-5503, 5910-00-519-9134 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 31257?

Key specifications for 31257: Terminal Type and Quantity: 2 TAB, SOLDER LUG; Winding Conductor Size: 0.03196 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE WINDING IN; Mounting Method: UNTHREADED HOLE(S) SINGLE GROUP; Special Features: COIL FORM BAKELITE; MOISTURE AND FUNGUS RESISTANT; SINGLE LAYER WOUND TYPE. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-257-3133 still in active supply?

NSN 5950-00-257-3133 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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