PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

09P237540-21-11Contact,electrical

Herley Chicago Dba Stewart Warner Electronics · NSN 5999-00-621-6957 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-621-6957 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-621-6957. Primary manufacturer part number: 09P237540-21-11.
Features
  • Contact,electrical — FSC 5999
  • Pin Accommodation Diameter: 0.056 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
  • Precious Material and Location: BODY AND CONTACT SURFACES GOLD
  • Precious Material and Weight: 0.005 GOLD GRAINS, TROY
  • Precious Material: GOLD
  • Surface Treatment: GOLD BODY AND CONTACT
  • Overall Diameter: 0.118 INCHES NOMINAL IN
  • Style Designator: SOCKET CONTACT
Applications
  • Applications requiring Beryllium Body and Contact construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-00-621-6957, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Herley Chicago Dba Stewart Warner Electronics. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-621-6957
Primary Part Number09P237540-21-11
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerHerley Chicago Dba Stewart Warner Electronics
StatusACTIVE
Pin Accommodation Diameter0.056 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
Precious Material and LocationBODY AND CONTACT SURFACES GOLD
Precious Material and Weight0.005 GOLD GRAINS, TROY
Precious MaterialGOLD
Surface TreatmentGOLD BODY AND CONTACT
Overall Diameter0.118 INCHES NOMINAL IN
Style DesignatorSOCKET CONTACT
Mounting MethodTERMINAL
MaterialBERYLLIUM BODY AND CONTACT
Pin Accommodation Diameter0.056 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
Precious Material and LocationBODY AND CONTACT SURFACES GOLD
Precious Material and Weight0.005 GOLD GRAINS, TROY
Precious MaterialGOLD
Surface TreatmentGOLD BODY AND CONTACT
Overall Diameter0.118 INCHES NOMINAL IN
Style DesignatorSOCKET CONTACT
Mounting MethodTERMINAL
MaterialBERYLLIUM BODY AND CONTACT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Weight0.0100 lbs
Cube0.0010 cu ft
Verified Substitutes 4
3110-00-156-145122222 INTERCHANGEABLE
Bearing,roller,self-Aligning
Almon Johnson Ltd
2940-00-451-4858568014 INTERCHANGEABLE
Filter Assembly,ret
Case J I Co
6515-01-394-5583508713 INTERCHANGEABLE
Applicator,disposable
Mckesson Medical-Surgical Inc. Dba Mckesson Medical-Surgical Inc
6750-01-427-4859 INTERCHANGEABLE
Film,photographic
Cross-Reference Index
Part NumberManufacturer
50871-3 Hubbard Instrument Co (USA)
2-50871-3 Te Connectivity Corporation (USA)
018-001738-059 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA)
09P237540-21-11 PRIMARY Herley Chicago Dba Stewart Warner Electronics (USA)
Related Parts
3110-00-156-1451INTERCHANGEABLE
BEARING,ROLLER,SELF-ALIGNING
22222
2940-00-451-4858INTERCHANGEABLE
FILTER ASSEMBLY,RET
568014
6515-01-394-5583INTERCHANGEABLE
APPLICATOR,DISPOSABLE
508713
6750-01-427-4859INTERCHANGEABLE
FILM,PHOTOGRAPHIC

Frequently Asked Questions

What is NSN 5999-00-621-6957?

NSN 5999-00-621-6957 is a Contact,electrical, manufactured by Herley Chicago Dba Stewart Warner Electronics, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-621-6957?

NSN 5999-00-621-6957 has 4 cross-referenced part numbers: 50871-3 (Hubbard Instrument Co), 2-50871-3 (Te Connectivity Corporation), 018-001738-059 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple), 09P237540-21-11 (Herley Chicago Dba Stewart Warner Electronics).

What NSN replaces 5999-00-621-6957?

There are 4 known substitutes for 5999-00-621-6957: 3110-00-156-1451, 2940-00-451-4858, 6515-01-394-5583 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 09P237540-21-11?

Key specifications for 09P237540-21-11: Pin Accommodation Diameter: 0.056 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN; Precious Material and Location: BODY AND CONTACT SURFACES GOLD; Precious Material and Weight: 0.005 GOLD GRAINS, TROY; Precious Material: GOLD. 22 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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