PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J412Clamp,c

The Stanley Works Dba Stanley Proto · NSN 5120-01-399-9450 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-399-9450 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-399-9450. Primary manufacturer part number: J412.
Features
  • Clamp,c — FSC 5120
  • Throat Depth: 5.750 INCHES NOMINAL IN
  • Test Load Rating: 9500.0 POUNDS LBS
  • Jaw Nominal Opening: 12.000 INCHES IN
  • 4 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 5120-01-399-9450, 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 4 commercial cross-references from 3 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
NSN5120-01-399-9450
Primary Part NumberJ412
Item NameClamp,c
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusACTIVE
Throat Depth5.750 INCHES NOMINAL IN
Test Load Rating9500.0 POUNDS LBS
Jaw Nominal Opening12.000 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4720-00-054-6358 INTERCHANGEABLE
Hose,nonmetallic
5975-00-442-30032142 INTERCHANGEABLE
Box Connector,electrical
Raco, a Division of Hubbell Incorporated(delaware)
5950-00-645-870320307 INTERCHANGEABLE
Transformer,power
Freed Transformer Co
1630-00-832-209320307 INTERCHANGEABLE
Parts Kit,cure Date
Moog Inc
6515-00-913-7908 INTERCHANGEABLE
Nozzle,automatic Jet Hypodermic
6340-00-942-131420-307 INTERCHANGEABLE
Component Board
Kidde Technologies, Inc Div Kidde Aerospace and Defense
3455-01-041-502350-10508 4533-7 INTERCHANGEABLE
Reamer,machine
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
5930-01-052-5583J4-12 INTERCHANGEABLE
Adapter,switch Actuator
Honeywell International Inc. Dba Honeyweel Sensing & Controls
5920-01-138-1764 INTERCHANGEABLE
Fuseholder,block
5365-01-195-572520307 INTERCHANGEABLE
Shim
Moog Inc. Dba Ampac-Isp Corp
Cross-Reference Index
Part NumberManufacturer
20307 Wilton Corp Wilton Tool Div (USA)
J412 PRIMARY The Stanley Works Dba Stanley Proto (USA)
3R346 W.w. Grainger, Inc. Div Government Sales Division (USA)
412 The Stanley Works Dba Stanley Proto (USA)
Related Parts
4720-00-054-6358INTERCHANGEABLE
HOSE,NONMETALLIC
5975-00-442-3003INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
2142
5950-00-645-8703INTERCHANGEABLE
TRANSFORMER,POWER
20307
1630-00-832-2093INTERCHANGEABLE
PARTS KIT,CURE DATE
20307
6515-00-913-7908INTERCHANGEABLE
NOZZLE,AUTOMATIC JET HYPODERMIC
6340-00-942-1314INTERCHANGEABLE
COMPONENT BOARD
20-307
3455-01-041-5023INTERCHANGEABLE
REAMER,MACHINE
50-10508 4533-7
5930-01-052-5583INTERCHANGEABLE
ADAPTER,SWITCH ACTUATOR
J4-12
5920-01-138-1764INTERCHANGEABLE
FUSEHOLDER,BLOCK
5365-01-195-5725INTERCHANGEABLE
SHIM
20307
5930-01-259-0811INTERCHANGEABLE
SWITCH,CENTRIFUGAL
3R346
5950-01-314-8038INTERCHANGEABLE
TRANSFORMER,POWER
20307

Frequently Asked Questions

What is NSN 5120-01-399-9450?

NSN 5120-01-399-9450 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 5120-01-399-9450?

NSN 5120-01-399-9450 has 4 cross-referenced part numbers: 20307 (Wilton Corp Wilton Tool Div), J412 (The Stanley Works Dba Stanley Proto), 3R346 (W.w. Grainger, Inc. Div Government Sales Division), 412 (The Stanley Works Dba Stanley Proto).

What NSN replaces 5120-01-399-9450?

There are 12 known substitutes for 5120-01-399-9450: 4720-00-054-6358, 5975-00-442-3003, 5950-00-645-8703 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of J412?

Key specifications for J412: Throat Depth: 5.750 INCHES NOMINAL IN; Test Load Rating: 9500.0 POUNDS LBS; Special Features: SLIDING PIN SCREW (FULL LENGTH); 7/8 IN. SCREW DIA IN; Jaw Nominal Opening: 12.000 INCHES IN. 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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