PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J4961Key Set,socket Head Screw

The Stanley Works Dba Stanley Proto · NSN 5120-01-290-9548 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-290-9548 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-290-9548. Primary manufacturer part number: J4961.
Features
  • Key Set,socket Head Screw — FSC 5120
  • Handle Type: L-STYLE
  • Container Type: ROLL
  • Key Characteristic: CONTAINS TORX KEYS SIZE T-10, T-15, T-20, T-25, T-27, T-30, T-40, T-45, T-50 AND T-55
  • Key Quantity: 10
  • 3 verified cross-references
  • Primary manufacturer: The Stanley Works Dba Stanley Proto
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Key Set,socket Head Screw, cataloged under National Stock Number 5120-01-290-9548, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is The Stanley Works Dba Stanley Proto. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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
NSN5120-01-290-9548
Primary Part NumberJ4961
Item NameKey Set,socket Head Screw
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusCANCELLED
Handle TypeL-STYLE
Container TypeROLL
Key CharacteristicCONTAINS TORX KEYS SIZE T-10, T-15, T-20, T-25, T-27, T-30, T-40, T-45, T-50 AND T-55
Key Quantity10
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4730-00-090-925214115204 INTERCHANGEABLE
Coupling,pipe
Danfoss Power Solutions II, Llc
4320-00-149-2255 INTERCHANGEABLE
Housing,liquid Pump
6625-00-243-06078197300 INTERCHANGEABLE
Meter,electrical Frequency
Us Army Aviation and Missile Command
5905-00-258-249425960-4-80 INTERCHANGEABLE
Resistor,fixed,wire Wound
Ward Leonard Ct Llc
4730-00-289-23705H4778 INTERCHANGEABLE
Elbow,pipe
Caterpillar Inc Div Caterpillar Defense
4030-00-291-3795 INTERCHANGEABLE
Clamp,wire Rope,bolted
2920-00-752-69514961 INTERCHANGEABLE
Sleeve,ignition Terminal
Champion Aerospace Llc
5930-00-890-95134961 INTERCHANGEABLE
Switch,toggle
Westinghouse Electric Corp
5120-01-073-5187GS15927-1 INTERCHANGEABLE
Expander,seal
Hamilton Sundstrand Corporation Dba Collins Aerospace
6625-01-101-1766Y8134 INTERCHANGEABLE
Lead Set,test
Fluke Corp
Cross-Reference Index
Part NumberManufacturer
4961 Stanley-Proto Industrial Works Div of the Stanley Works (USA)
J4961 PRIMARY The Stanley Works Dba Stanley Proto (USA)
4961 The Stanley Works Dba Stanley Proto (USA)
Related Parts
4730-00-090-9252INTERCHANGEABLE
COUPLING,PIPE
14115204
4320-00-149-2255INTERCHANGEABLE
HOUSING,LIQUID PUMP
6625-00-243-0607INTERCHANGEABLE
METER,ELECTRICAL FREQUENCY
8197300
5905-00-258-2494INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
25960-4-80
4730-00-289-2370INTERCHANGEABLE
ELBOW,PIPE
5H4778
4030-00-291-3795INTERCHANGEABLE
CLAMP,WIRE ROPE,BOLTED
2920-00-752-6951INTERCHANGEABLE
SLEEVE,IGNITION TERMINAL
4961
5930-00-890-9513INTERCHANGEABLE
SWITCH,TOGGLE
4961
5120-01-073-5187INTERCHANGEABLE
EXPANDER,SEAL
GS15927-1
6625-01-101-1766INTERCHANGEABLE
LEAD SET,TEST
Y8134
6110-01-150-4091INTERCHANGEABLE
PANEL,POWER DISTRIBUTION
5330-01-292-7160INTERCHANGEABLE
GASKET
N257129

Frequently Asked Questions

What is NSN 5120-01-290-9548?

NSN 5120-01-290-9548 is a Key Set,socket Head Screw, manufactured by The Stanley Works Dba Stanley Proto, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-01-290-9548?

NSN 5120-01-290-9548 has 3 cross-referenced part numbers: 4961 (Stanley-Proto Industrial Works Div of the Stanley Works), J4961 (The Stanley Works Dba Stanley Proto), 4961 (The Stanley Works Dba Stanley Proto).

What NSN replaces 5120-01-290-9548?

There are 12 known substitutes for 5120-01-290-9548: 4730-00-090-9252, 4320-00-149-2255, 6625-00-243-0607 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of J4961?

Key specifications for J4961: Handle Type: L-STYLE; Container Type: ROLL; Key Characteristic: CONTAINS TORX KEYS SIZE T-10, T-15, T-20, T-25, T-27, T-30, T-40, T-45, T-50 AND T-55; Key Quantity: 10. 4 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-01-290-9548 still in active supply?

NSN 5120-01-290-9548 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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