PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J408Clamp,c

The Stanley Works Dba Stanley Proto · NSN 5120-01-399-9447 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-399-9447 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-399-9447. Primary manufacturer part number: J408.
Features
  • Clamp,c — FSC 5120
  • Jaw Nominal Opening: 8.000 INCHES IN
  • Throat Depth: 4.500 INCHES NOMINAL IN
  • Test Load Rating: 5900.0 POUNDS LBS
  • 3 verified cross-references
  • Primary manufacturer: The Stanley Works Dba Stanley Proto
Applications
  • Field maintenance and repair
  • Facility maintenance operations
  • General-purpose hand tools
General Description

The Clamp,c, cataloged under National Stock Number 5120-01-399-9447, 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 3 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-399-9447
Primary Part NumberJ408
Item NameClamp,c
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusACTIVE
Jaw Nominal Opening8.000 INCHES IN
Throat Depth4.500 INCHES NOMINAL IN
Test Load Rating5900.0 POUNDS LBS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4720-00-054-6357 INTERCHANGEABLE
Hose,nonmetallic
4820-00-276-896196569-A2 INTERCHANGEABLE
Valve,regulating,temperature
Schneider Electric Systems Usa Inc
4820-01-228-432443042 INTERCHANGEABLE
Shield,bellows
Spirax Sarco Inc Dba Spirax Sarco
Cross-Reference Index
Part NumberManufacturer
J408 PRIMARY The Stanley Works Dba Stanley Proto (USA)
3R342 W.w. Grainger, Inc. Div Government Sales Division (USA)
408 The Stanley Works Dba Stanley Proto (USA)
Related Parts
4720-00-054-6357INTERCHANGEABLE
HOSE,NONMETALLIC
4820-00-276-8961INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
96569-A2
4820-01-228-4324INTERCHANGEABLE
SHIELD,BELLOWS
43042

Frequently Asked Questions

What is NSN 5120-01-399-9447?

NSN 5120-01-399-9447 is a Clamp,c, manufactured by The Stanley Works Dba Stanley Proto, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-399-9447?

NSN 5120-01-399-9447 has 3 cross-referenced part numbers: J408 (The Stanley Works Dba Stanley Proto), 3R342 (W.w. Grainger, Inc. Div Government Sales Division), 408 (The Stanley Works Dba Stanley Proto).

What NSN replaces 5120-01-399-9447?

There are 3 known substitutes for 5120-01-399-9447: 4720-00-054-6357, 4820-00-276-8961, 4820-01-228-4324. Verify interchangeability with system specifications before substitution.

What are the specifications of J408?

Key specifications for J408: Jaw Nominal Opening: 8.000 INCHES IN; Throat Depth: 4.500 INCHES NOMINAL IN; Special Features: SLIDING PIN SCREW (FULL LENGTH); 3/4 IN. SCREW DIA IN; Test Load Rating: 5900.0 POUNDS LBS. 4 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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