PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

L2Key,socket Head Screw

Cabot Corp Aluminum Master Alloy Business Unit · NSN 5120-00-177-6919 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-177-6919 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-177-6919. Primary manufacturer part number: L2.
Features
  • Key,socket Head Screw — FSC 5120
  • Long Arm Length: 1.750 INCHES NOMINAL IN
  • Wrenching Surface Size: 0.078 INCHES NOMINAL BOTH ENDS IN
  • Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL
  • Style Designator: L-HANDLE
  • Features Provided: NONMAGNETIC AND NONSPARKING
  • Material: COPPER ALLOY OVERALL
  • Short Arm Length: 0.750 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy Overall construction
General Description

The Key,socket Head Screw, cataloged under National Stock Number 5120-00-177-6919, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Cabot Corp Aluminum Master Alloy Business Unit. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5120-00-177-6919
Primary Part NumberL2
Item NameKey,socket Head Screw
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerCabot Corp Aluminum Master Alloy Business Unit
StatusACTIVE
Long Arm Length1.750 INCHES NOMINAL IN
Wrenching Surface Size0.078 INCHES NOMINAL BOTH ENDS IN
Wrenching Surface ShapeHEXAGON BOTH ENDS EXTERNAL
Style DesignatorL-HANDLE
Features ProvidedNONMAGNETIC AND NONSPARKING
MaterialCOPPER ALLOY OVERALL
Short Arm Length0.750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
9515-00-130-353322L2 INTERCHANGEABLE
Strip,metal
Precision Steel Warehouse Inc
3120-00-148-210511149 INTERCHANGEABLE
Bearing,sleeve
Rps-Fl, Inc. Dba Rps Inc
5120-00-189-29945120-00-189-2994 INTERCHANGEABLE
Key,socket Head Screw
General Services Administration Federal Supply Service
5325-00-282-5358L2 INTERCHANGEABLE
Ring,retaining
Simmons Fastener Corp an Amfast Corp
4140-00-289-8830 INTERCHANGEABLE
Fan,tubeaxial
5120-00-473-77345602907 INTERCHANGEABLE
Wrench,torsional Br
U S Army Tank Automotive Command Amsta-Im-Mm
5920-00-820-4301714030-22 INTERCHANGEABLE
Fuse,plug
Raytheon Company Dba Raytheon
6685-00-894-3223 INTERCHANGEABLE
Gage,pressure,dial Indicating
5845-01-039-5364 INTERCHANGEABLE
Valve,probe Insert
6695-01-254-2013 INTERCHANGEABLE
Transducer,motional Pickup
Cross-Reference Index
Part NumberManufacturer
L2 Cabot Corp Aluminum Master Alloy Business Unit (USA)
Related Parts
9515-00-130-3533INTERCHANGEABLE
STRIP,METAL
22L2
3120-00-148-2105INTERCHANGEABLE
BEARING,SLEEVE
11149
5120-00-189-2994INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5120-00-189-2994
5325-00-282-5358INTERCHANGEABLE
RING,RETAINING
L2
4140-00-289-8830INTERCHANGEABLE
FAN,TUBEAXIAL
5120-00-473-7734INTERCHANGEABLE
WRENCH,TORSIONAL BR
5602907
5920-00-820-4301INTERCHANGEABLE
FUSE,PLUG
714030-22
6685-00-894-3223INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
5845-01-039-5364INTERCHANGEABLE
VALVE,PROBE INSERT
6695-01-254-2013INTERCHANGEABLE
TRANSDUCER,MOTIONAL PICKUP
5996-01-281-9840INTERCHANGEABLE
AMPLIFIER,RADIO FREQUENCY
L-2
5340-01-444-8391INTERCHANGEABLE
PAD EYE
L-2

Frequently Asked Questions

What is NSN 5120-00-177-6919?

NSN 5120-00-177-6919 is a Key,socket Head Screw, manufactured by Cabot Corp Aluminum Master Alloy Business Unit, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-00-177-6919?

NSN 5120-00-177-6919 has 1 cross-referenced part number: L2 (Cabot Corp Aluminum Master Alloy Business Unit).

What NSN replaces 5120-00-177-6919?

There are 12 known substitutes for 5120-00-177-6919: 9515-00-130-3533, 3120-00-148-2105, 5120-00-189-2994 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of L2?

Key specifications for L2: Long Arm Length: 1.750 INCHES NOMINAL IN; Wrenching Surface Size: 0.078 INCHES NOMINAL BOTH ENDS IN; Overall Length: 1.828 INCHES NOMINAL IN; Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL. 8 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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