PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7122A19Key,socket Head Screw

Mcmaster-Carr Supply Co · NSN 5120-00-889-2163 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-889-2163 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-889-2163. Primary manufacturer part number: 7122A19.
Features
  • Key,socket Head Screw — FSC 5120
  • Short Arm Length: 0.8125 INCHES NOMINAL IN
  • Wrenching Surface Size: 0.141 INCHES NOMINAL BOTH ENDS IN
  • Long Arm Length: 2.375 INCHES NOMINAL IN
  • Specification/standard Data: 05047-ASME B18.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Material: STEEL OVERALL
  • Style Designator: L-HANDLE
  • Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL
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 5120-00-889-2163, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 20 commercial cross-references from 17 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
NSN5120-00-889-2163
Primary Part Number7122A19
Item NameKey,socket Head Screw
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerMcmaster-Carr Supply Co
StatusCANCELLED
Short Arm Length0.8125 INCHES NOMINAL IN
Wrenching Surface Size0.141 INCHES NOMINAL BOTH ENDS IN
Long Arm Length2.375 INCHES NOMINAL IN
Specification/standard Data05047-ASME B18.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
MaterialSTEEL OVERALL
Style DesignatorL-HANDLE
Wrenching Surface ShapeHEXAGON BOTH ENDS EXTERNAL
Features ProvidedSHORT SERIES
Environmental Attribute CodePLASTICS REMOVAL IN THE MARINE ENVIRONMENT (PRIME) PRODUCT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5950-00-087-6651 INTERCHANGEABLE
Transformer,power
5120-00-189-2979L-17 INTERCHANGEABLE
Key,socket Head Screw
Ngk Metals Corporation Dba N G K Berylco
5120-00-189-2980L-16 INTERCHANGEABLE
Key,socket Head Screw
Ngk Metals Corporation Dba N G K Berylco
5120-00-189-2981L-15 INTERCHANGEABLE
Key,socket Head Screw
Ngk Metals Corporation Dba N G K Berylco
5120-00-189-29825120-00-189-2982 INTERCHANGEABLE
Key,socket Head Screw
General Services Administration Federal Supply Service
5120-00-189-2983L-13 INTERCHANGEABLE
Key,socket Head Screw
Ngk Metals Corporation Dba N G K Berylco
5120-00-189-2984 INTERCHANGEABLE
Key,socket Head Screw
5120-00-189-2985 INTERCHANGEABLE
Key,socket Head Screw
5120-00-189-29865120-00-189-2986 INTERCHANGEABLE
Key,socket Head Screw
General Services Administration Federal Supply Service
5120-00-189-29875120-00-189-2987 INTERCHANGEABLE
Key,socket Head Screw
General Services Administration Federal Supply Service
Cross-Reference Index
Part NumberManufacturer
9/64 Forniture Industriali Srl (ITA)
M2700-420 Daniels Manufacturing Corporation (USA)
B18.3 The American Society of Mechanical Engineers (USA)
558/4/05008/000 A B Connectors Ltd Div Ab Connectors Ltd (GBR)
A-A-2477 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
57018 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
GGG-K-275 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
58A5A294-16 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
M2700-420 Oceta (FRA)
B18.3 9/64 IN. SHORT ARM SERIES General Services Administration Federal Supply Service (USA)
50001988-13 Bureau De Gestion Otan Hawk (FRA)
A-A-2473 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
7122A19 PRIMARY Mcmaster-Carr Supply Co (USA)
P848000209 F E L Corp (USA)
68008 Allen Mfg Co Sub of Chicago Pneumatic Tool Co (USA)
M2700-420 Crimp-Tech Australia Pty Ltd (AUS)
9/64 Allen Mfg Co Sub of Chicago Pneumatic Tool Co (USA)
GGG-K-275 TY1CL1 General Services Administration Federal Supply Service (USA)
H23748 Mbda Uk Ltd (GBR)
57018 Apex Tool Group, Llc Dba Nicholson (USA)
Related Parts
5950-00-087-6651INTERCHANGEABLE
TRANSFORMER,POWER
5120-00-189-2979INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
L-17
5120-00-189-2980INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
L-16
5120-00-189-2981INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
L-15
5120-00-189-2982INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5120-00-189-2982
5120-00-189-2983INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
L-13
5120-00-189-2984INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5120-00-189-2985INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5120-00-189-2986INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5120-00-189-2986
5120-00-189-2987INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5120-00-189-2987
5120-00-189-2988INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5120-00-189-2989INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5120-00-189-2989

Frequently Asked Questions

What is NSN 5120-00-889-2163?

NSN 5120-00-889-2163 is a Key,socket Head Screw, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-889-2163?

NSN 5120-00-889-2163 has 20 cross-referenced part numbers: 9/64 (Forniture Industriali Srl), M2700-420 (Daniels Manufacturing Corporation), B18.3 (The American Society of Mechanical Engineers), 558/4/05008/000 (A B Connectors Ltd Div Ab Connectors Ltd), A-A-2477 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC) and 15 more.

What NSN replaces 5120-00-889-2163?

There are 12 known substitutes for 5120-00-889-2163: 5950-00-087-6651, 5120-00-189-2979, 5120-00-189-2980 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7122A19?

Key specifications for 7122A19: Short Arm Length: 0.8125 INCHES NOMINAL IN; Wrenching Surface Size: 0.141 INCHES NOMINAL BOTH ENDS IN; Long Arm Length: 2.375 INCHES NOMINAL IN; Specification/standard Data: 05047-ASME B18.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-889-2163 still in active supply?

NSN 5120-00-889-2163 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.
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