PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

31-607Switch,engine Starter,electrical

Pollak Joseph Corp · NSN 2920-01-125-5972 · FSC 2920 · No Item Name Available
Verified by PartsTable
NSN 2920-01-125-5972 — this item is cataloged by the U.S. Government under National Stock Number 2920-01-125-5972. Primary manufacturer part number: 31-607.
Features
  • Switch,engine Starter,electrical — FSC 2920
  • Design Type: ROTATING SHAFT
  • Terminal Type and Quantity: 3 THREADED POST
  • Automatic Choke Terminal: NOT INCLUDED
  • Mounting Facility Size: 3/4-20 UNEF THD
  • Contact Break Type: SINGLE
  • Mounting Method: BUSHING
  • Usage Design: STARTER MOTOR CONTACT TERMINAL
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
  • Mechanical power generation
  • Drive system operation
General Description

The Switch,engine Starter,electrical, cataloged under National Stock Number 2920-01-125-5972, is classified within Federal Supply Class 2920 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Pollak Joseph Corp. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2920-01-125-5972
Primary Part Number31-607
Item NameSwitch,engine Starter,electrical
FSC / FSG2920 / 29 — No Item Name Available
ManufacturerPollak Joseph Corp
StatusACTIVE
Design TypeROTATING SHAFT
Terminal Type and Quantity3 THREADED POST
Automatic Choke TerminalNOT INCLUDED
Mounting Facility Size3/4-20 UNEF THD
Contact Break TypeSINGLE
Mounting MethodBUSHING
Usage DesignSTARTER MOTOR CONTACT TERMINAL
SubmersibilityNONSUBMERSIBLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5950-00-764-108936662 INTERCHANGEABLE
Transformer,audio Frequency
Freed Transformer Co
3455-01-041-502350-10508 4533-7 INTERCHANGEABLE
Reamer,machine
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
5985-01-219-9496 INTERCHANGEABLE
Antenna Section Twd
4130-01-261-4681 INTERCHANGEABLE
Mounting Kit,compre
6550-01-264-1369231607 INTERCHANGEABLE
Sensitivity Discs,diagnostic
Becton, Dickinson and Company Dba Becton Dickinson & Co
5331-01-283-7472 INTERCHANGEABLE
O-Ring
5210-01-434-9756452-10 INTERCHANGEABLE
Caliper,outside
General Tools Manufacturing Co., Llc.
5120-01-470-721631607 INTERCHANGEABLE
Key,socket Head Screw
Eklind Tool Co
5331-01-548-13019X4609 INTERCHANGEABLE
O-Ring
Caterpillar Inc Div Caterpillar Defense
6640-01-691-911031607 INTERCHANGEABLE
Calibration Kit,pipet Volumetric
Restek Corp
Cross-Reference Index
Part NumberManufacturer
31-607 PRIMARY Pollak Joseph Corp (USA)
EL-100-A Tld Wollard Llc (USA)
Related Parts
5950-00-764-1089INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
36662
3455-01-041-5023INTERCHANGEABLE
REAMER,MACHINE
50-10508 4533-7
5985-01-219-9496INTERCHANGEABLE
ANTENNA SECTION TWD
4130-01-261-4681INTERCHANGEABLE
MOUNTING KIT,COMPRE
6550-01-264-1369INTERCHANGEABLE
SENSITIVITY DISCS,DIAGNOSTIC
231607
5331-01-283-7472INTERCHANGEABLE
O-RING
5210-01-434-9756INTERCHANGEABLE
CALIPER,OUTSIDE
452-10
5120-01-470-7216INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
31607
5331-01-548-1301INTERCHANGEABLE
O-RING
9X4609
6640-01-691-9110INTERCHANGEABLE
CALIBRATION KIT,PIPET VOLUMETRIC
31607

Frequently Asked Questions

What is NSN 2920-01-125-5972?

NSN 2920-01-125-5972 is a Switch,engine Starter,electrical, manufactured by Pollak Joseph Corp, classified under FSC 2920 (No Item Name Available). Status: active.

What are the part numbers for NSN 2920-01-125-5972?

NSN 2920-01-125-5972 has 2 cross-referenced part numbers: 31-607 (Pollak Joseph Corp), EL-100-A (Tld Wollard Llc).

What NSN replaces 2920-01-125-5972?

There are 10 known substitutes for 2920-01-125-5972: 5950-00-764-1089, 3455-01-041-5023, 5985-01-219-9496 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 31-607?

Key specifications for 31-607: Design Type: ROTATING SHAFT; Terminal Type and Quantity: 3 THREADED POST; Automatic Choke Terminal: NOT INCLUDED; Mounting Facility Size: 3/4-20 UNEF THD. 8 total characteristics are documented in the Federal Logistics Information System.

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