PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

125139Screw,externally Relieved Body

Telemechanics Inc · NSN 5305-00-206-9850 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-206-9850 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-206-9850. Primary manufacturer part number: 125139.
Features
  • Screw,externally Relieved Body — FSC 5305
  • Nominal Thread Diameter: 0.112 INCHES IN
  • Distance From Largest Bearing Surface of Head to End of First Diameter: 0.025 INCHES NOMINAL IN
  • First Diameter From Head: 0.094 INCHES NOMINAL IN
  • Head Style: FILLISTER
  • Externally Relieved Body Diameter Quantity: 1
  • Thread Length: 0.125 INCHES MINIMUM IN
  • Internal Drive Style: CROSS RECESS TYPE 1
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,externally Relieved Body, cataloged under National Stock Number 5305-00-206-9850, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Telemechanics Inc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-206-9850
Primary Part Number125139
Item NameScrew,externally Relieved Body
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerTelemechanics Inc
StatusCANCELLED
Nominal Thread Diameter0.112 INCHES IN
Distance From Largest Bearing Surface of Head to End of First Diameter0.025 INCHES NOMINAL IN
First Diameter From Head0.094 INCHES NOMINAL IN
Head StyleFILLISTER
Externally Relieved Body Diameter Quantity1
Thread Length0.125 INCHES MINIMUM IN
Internal Drive StyleCROSS RECESS TYPE 1
Thread DirectionRIGHT-HAND
Thread Quantity Per Inch40
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
MaterialSTEEL OVERALL
Head Height0.096 INCHES NOMINAL IN
Head Diameter0.175 INCHES NOMINAL IN
Surface TreatmentCHROMATE ZINC OVERALL
Thread Class3A A
Fastener Length0.156 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3110-00-100-9551 INTERCHANGEABLE
Cone and Rollers,tapered Roller
2030-00-175-8787 INTERCHANGEABLE
Davits,boat,trackway
2030-00-175-8788 INTERCHANGEABLE
Davits,boat,trackway
8115-00-290-33863386 INTERCHANGEABLE
Box,shipping
Connecticut Container Corp. Dba Connecticut Container Corp
2530-00-353-1056200 INTERCHANGEABLE
Lining,friction
Johns Manville Intl
5935-00-401-65663386 INTERCHANGEABLE
Polarizing Key,conn
Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect
2530-00-734-2546FD3677 INTERCHANGEABLE
Cylinder Assembly,hydraulic Brak
Federal Mogul Corp Sub Wagner Brake Moog Automotive Div
5340-00-982-5682 INTERCHANGEABLE
Caster,rigid
5950-00-991-11703386 INTERCHANGEABLE
Transformer,power
The Bechdon Company, Llc
5905-01-068-7891285155 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Fluke Corp
Cross-Reference Index
Part NumberManufacturer
33-86 Telemechanics Inc (USA)
125139 PRIMARY Telemechanics Inc (USA)
33-86 American Telephone and Telegraph Co (USA)
125139 American Telephone and Telegraph Co (USA)
Related Parts
3110-00-100-9551INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
2030-00-175-8787INTERCHANGEABLE
DAVITS,BOAT,TRACKWAY
2030-00-175-8788INTERCHANGEABLE
DAVITS,BOAT,TRACKWAY
8115-00-290-3386INTERCHANGEABLE
BOX,SHIPPING
3386
2530-00-353-1056INTERCHANGEABLE
LINING,FRICTION
200
5935-00-401-6566INTERCHANGEABLE
POLARIZING KEY,CONN
3386
2530-00-734-2546INTERCHANGEABLE
CYLINDER ASSEMBLY,HYDRAULIC BRAK
FD3677
5340-00-982-5682INTERCHANGEABLE
CASTER,RIGID
5950-00-991-1170INTERCHANGEABLE
TRANSFORMER,POWER
3386
5905-01-068-7891INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
285155
2940-01-249-1476INTERCHANGEABLE
FILTER ELEMENT,FLUID
20801-02021
5985-01-324-2847INTERCHANGEABLE
DUMMY LOAD,ELECTRICAL
1426-4

Frequently Asked Questions

What is NSN 5305-00-206-9850?

NSN 5305-00-206-9850 is a Screw,externally Relieved Body, manufactured by Telemechanics Inc, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-00-206-9850?

NSN 5305-00-206-9850 has 4 cross-referenced part numbers: 33-86 (Telemechanics Inc), 125139 (Telemechanics Inc), 33-86 (American Telephone and Telegraph Co), 125139 (American Telephone and Telegraph Co).

What NSN replaces 5305-00-206-9850?

There are 12 known substitutes for 5305-00-206-9850: 3110-00-100-9551, 2030-00-175-8787, 2030-00-175-8788 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 125139?

Key specifications for 125139: Nominal Thread Diameter: 0.112 INCHES IN; Distance From Largest Bearing Surface of Head to End of First Diameter: 0.025 INCHES NOMINAL IN; First Diameter From Head: 0.094 INCHES NOMINAL IN; Head Style: FILLISTER. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-206-9850 still in active supply?

NSN 5305-00-206-9850 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.
PartsTable Design LLC · partstable.com