PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5120-00-871-1987Key,socket Head Screw

General Services Administration Federal Supply Service · NSN 5120-00-871-1987 · FSC 5120 · No Item Name Available
Verified by PartsTable
Features
  • Key,socket Head Screw — FSC 5120
  • Long Arm Length: 1.656 INCHES MINIMUM AND 1.844 INCHES MAXIMUM IN
  • Short Arm Length: 0.469 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
  • Style Designator: L-HANDLE
  • Wrenching Surface Shape: SPLINE BOTH ENDS EXTERNAL
  • Wrenching Surface Flute Quantity: 4
  • Material: STEEL OVERALL
  • Specification/standard Data: 05047-ASME B18.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Key,socket Head Screw, cataloged under National Stock Number 5120-00-871-1987, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is General Services Administration Federal Supply Service. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-00-871-1987
Primary Part Number5120-00-871-1987
Item NameKey,socket Head Screw
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerGeneral Services Administration Federal Supply Service
StatusACTIVE
Long Arm Length1.656 INCHES MINIMUM AND 1.844 INCHES MAXIMUM IN
Short Arm Length0.469 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
Style DesignatorL-HANDLE
Wrenching Surface ShapeSPLINE BOTH ENDS EXTERNAL
Wrenching Surface Flute Quantity4
MaterialSTEEL OVERALL
Specification/standard Data05047-ASME B18.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Hardness Rating52.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM
Wrenching Surface Size0.069 INCHES NOMINAL BOTH ENDS IN
Features ProvidedSHORT SERIES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5120-00-107-0038 INTERCHANGEABLE
Key,socket Head Screw
5120-00-113-3432TMAL3E2 INTERCHANGEABLE
Bit,screwdriver
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-00-142-53335120-00-142-5333 INTERCHANGEABLE
Key,socket Head Screw
General Services Administration Federal Supply Service
5120-00-203-5107 INTERCHANGEABLE
Key,socket Head Screw
5120-00-224-2496 INTERCHANGEABLE
Key,socket Head Screw
5120-00-293-2219 INTERCHANGEABLE
Key,socket Head Screw
5120-00-293-92065120-00-293-9206 INTERCHANGEABLE
Key,socket Head Screw
General Services Administration Federal Supply Service
5120-00-696-47685120-00-696-4768 INTERCHANGEABLE
Key Set,socket Head Screw
General Services Administration Federal Supply Service
5120-00-830-56855120-00-830-5685 INTERCHANGEABLE
Key,socket Head Screw
General Services Administration Federal Supply Service
5120-00-832-6216 INTERCHANGEABLE
Key,socket Head Screw
Cross-Reference Index
Part NumberManufacturer
S-069-4 American Socket Screw Mfg Co (USA)
A-A-2927 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
GGG-K-275 TY2CL1 General Services Administration Federal Supply Service (USA)
A-A-2926 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
GGG-K-275 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
B18.3 The American Society of Mechanical Engineers (USA)
5120-00-871-1987 PRIMARY General Services Administration Federal Supply Service (USA)
38-7S069-4 Anchor Rubber Company Inc (USA)
Related Parts
5120-00-107-0038INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5120-00-113-3432INTERCHANGEABLE
BIT,SCREWDRIVER
TMAL3E2
5120-00-142-5333INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5120-00-142-5333
5120-00-203-5107INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5120-00-224-2496INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5120-00-293-2219INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5120-00-293-9206INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5120-00-293-9206
5120-00-696-4768INTERCHANGEABLE
KEY SET,SOCKET HEAD SCREW
5120-00-696-4768
5120-00-830-5685INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5120-00-830-5685
5120-00-832-6216INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5120-00-892-5999INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5120-00-912-1085INTERCHANGEABLE
KEY SET,SOCKET HEAD SCREW
5120-00-912-1085

Frequently Asked Questions

What is NSN 5120-00-871-1987?

NSN 5120-00-871-1987 is a Key,socket Head Screw, manufactured by General Services Administration Federal Supply Service, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-00-871-1987?

NSN 5120-00-871-1987 has 8 cross-referenced part numbers: S-069-4 (American Socket Screw Mfg Co), A-A-2927 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), GGG-K-275 TY2CL1 (General Services Administration Federal Supply Service), A-A-2926 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), GGG-K-275 (Federal Specifications Promulgated by General Services Administration Washington DC) and 3 more.

What NSN replaces 5120-00-871-1987?

There are 12 known substitutes for 5120-00-871-1987: 5120-00-107-0038, 5120-00-113-3432, 5120-00-142-5333 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5120-00-871-1987?

Key specifications for 5120-00-871-1987: Overall Length: 1.724 INCHES MINIMUM AND 1.913 INCHES MAXIMUM IN; Long Arm Length: 1.656 INCHES MINIMUM AND 1.844 INCHES MAXIMUM IN; Short Arm Length: 0.469 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN; Style Designator: L-HANDLE. 11 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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