PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1257-1Bit,crimped Contact

U S Components Inc · NSN 5120-00-869-6986 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-869-6986 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-869-6986. Primary manufacturer part number: 1257-1.
Features
  • Bit,crimped Contact — FSC 5120
  • General Characteristics Item Description: USED WITH MS18137-20-1 HANDLE TO INSTALL MS18134 AND MS18136 SIZE 20 CONTACTS
  • 2 verified cross-references
  • Primary manufacturer: U S Components Inc
Applications
  • Field maintenance and repair
  • Facility maintenance operations
  • General-purpose hand tools
General Description

The Bit,crimped Contact, cataloged under National Stock Number 5120-00-869-6986, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is U S Components Inc. Government technical data includes 1 verified specification, 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-00-869-6986
Primary Part Number1257-1
Item NameBit,crimped Contact
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerU S Components Inc
StatusACTIVE
General Characteristics Item DescriptionUSED WITH MS18137-20-1 HANDLE TO INSTALL MS18134 AND MS18136 SIZE 20 CONTACTS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
6130-00-134-5520NP28-0-6-0L INTERCHANGEABLE
Power Supply
Technipower Llc Dba Unipower
4330-00-287-874408P00410TE INTERCHANGEABLE
Filter Element,fluid
Met-Pro Corporation
5930-00-422-22051257-1 INTERCHANGEABLE
Switch,push
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
6685-00-527-71872025018507 INTERCHANGEABLE
Gage,pressure,dial Indicating
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
3030-01-037-8351 INTERCHANGEABLE
Belt,v
2915-01-145-50231-257-1 INTERCHANGEABLE
Valve,fuel Float Vent
Parker Hannifin Corporation Div Aerospace Group Headquarters
5930-01-195-553875J588001-105 INTERCHANGEABLE
Switch,pressure
The Boeing Company Div Defense
5315-01-299-9306 INTERCHANGEABLE
Pin,straight,headless
1377-01-346-22161257-1 INTERCHANGEABLE
Initiator,cartridge Actuated
Rockwell Collins Inc
Cross-Reference Index
Part NumberManufacturer
1257-1 U S Components Inc (USA)
MS18137-20-2 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6130-00-134-5520INTERCHANGEABLE
POWER SUPPLY
NP28-0-6-0L
4330-00-287-8744INTERCHANGEABLE
FILTER ELEMENT,FLUID
08P00410TE
5930-00-422-2205INTERCHANGEABLE
SWITCH,PUSH
1257-1
6685-00-527-7187INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
2025018507
3030-01-037-8351INTERCHANGEABLE
BELT,V
2915-01-145-5023INTERCHANGEABLE
VALVE,FUEL FLOAT VENT
1-257-1
5930-01-195-5538INTERCHANGEABLE
SWITCH,PRESSURE
75J588001-105
5315-01-299-9306INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
1377-01-346-2216INTERCHANGEABLE
INITIATOR,CARTRIDGE ACTUATED
1257-1

Frequently Asked Questions

What is NSN 5120-00-869-6986?

NSN 5120-00-869-6986 is a Bit,crimped Contact, manufactured by U S Components Inc, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-00-869-6986?

NSN 5120-00-869-6986 has 2 cross-referenced part numbers: 1257-1 (U S Components Inc), MS18137-20-2 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5120-00-869-6986?

There are 9 known substitutes for 5120-00-869-6986: 6130-00-134-5520, 4330-00-287-8744, 5930-00-422-2205 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1257-1?

Key specifications for 1257-1: General Characteristics Item Description: USED WITH MS18137-20-1 HANDLE TO INSTALL MS18134 AND MS18136 SIZE 20 CONTACTS. 1 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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