PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2100-4Insert,screw Thread

Nafco Usa Llc · NSN 5325-00-290-4473 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-290-4473 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-290-4473. Primary manufacturer part number: 2100-4.
Features
  • Insert,screw Thread — FSC 5325
  • Material: STEEL OVERALL
  • Thread Quantity Per Inch: 28
  • Surface Treatment: CADMIUM OVERALL
  • Thread Series Designator: UNF
  • Thread Class: 3B
  • Nominal Thread Size: 0.250 INCHES IN
  • Length: 0.375 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Insert,screw Thread, cataloged under National Stock Number 5325-00-290-4473, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Nafco Usa Llc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 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: Active.

Technical Specifications
ParameterValue
NSN5325-00-290-4473
Primary Part Number2100-4
Item NameInsert,screw Thread
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerNafco Usa Llc
StatusACTIVE
MaterialSTEEL OVERALL
Thread Quantity Per Inch28
Surface TreatmentCADMIUM OVERALL
Thread Series DesignatorUNF
Thread Class3B
Nominal Thread Size0.250 INCHES IN
Length0.375 INCHES NOMINAL IN
Slot Width0.046 INCHES NOMINAL IN
Insert Size0.375-16 UNC CLASS 3A A
Slot Depth0.050 INCHES NOMINAL IN
Style DesignatorSLOTTED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5120-00-061-8540 INTERCHANGEABLE
Hammer,hand
5120-00-079-4600 INTERCHANGEABLE
Inserter,electrical Contact
6250-00-196-8830 INTERCHANGEABLE
Lampholder
5120-00-222-455621004 INTERCHANGEABLE
Tool,wedge,terminal
Abb Installation Products Inc
5325-00-276-420537285 INTERCHANGEABLE
Grommet,nonmetallic
Raytheon Company Dba Raytheon
4730-00-287-0289 INTERCHANGEABLE
Nut,tube Coupling
4820-00-389-835629472 INTERCHANGEABLE
Guide,valve Stem
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
2990-00-753-84202199800 INTERCHANGEABLE
Muffler,exhaust
General Motors Llc Dba General Motors Llc
5961-00-938-1135 INTERCHANGEABLE
Semiconductor Device,diode
5940-00-983-6082 INTERCHANGEABLE
Terminal Board
Cross-Reference Index
Part NumberManufacturer
2100-4 Nafco Usa Llc (USA)
29472 Hamilton Sundstrand Corporation (USA)
Related Parts
5120-00-061-8540INTERCHANGEABLE
HAMMER,HAND
5120-00-079-4600INTERCHANGEABLE
INSERTER,ELECTRICAL CONTACT
6250-00-196-8830INTERCHANGEABLE
LAMPHOLDER
5120-00-222-4556INTERCHANGEABLE
TOOL,WEDGE,TERMINAL
21004
5325-00-276-4205INTERCHANGEABLE
GROMMET,NONMETALLIC
37285
4730-00-287-0289INTERCHANGEABLE
NUT,TUBE COUPLING
4820-00-389-8356INTERCHANGEABLE
GUIDE,VALVE STEM
29472
2990-00-753-8420INTERCHANGEABLE
MUFFLER,EXHAUST
2199800
5961-00-938-1135INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5940-00-983-6082INTERCHANGEABLE
TERMINAL BOARD
6520-01-082-4897INTERCHANGEABLE
MAGNIFIER,DENTAL LABORATORY
1900-29472
5365-01-111-8296INTERCHANGEABLE
RING,MOUNTING,BLOWE

Frequently Asked Questions

What is NSN 5325-00-290-4473?

NSN 5325-00-290-4473 is a Insert,screw Thread, manufactured by Nafco Usa Llc, classified under FSC 5325 (No Item Name Available). Status: active.

What are the part numbers for NSN 5325-00-290-4473?

NSN 5325-00-290-4473 has 2 cross-referenced part numbers: 2100-4 (Nafco Usa Llc), 29472 (Hamilton Sundstrand Corporation).

What NSN replaces 5325-00-290-4473?

There are 12 known substitutes for 5325-00-290-4473: 5120-00-061-8540, 5120-00-079-4600, 6250-00-196-8830 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2100-4?

Key specifications for 2100-4: Material: STEEL OVERALL; Thread Quantity Per Inch: 28; Surface Treatment: CADMIUM OVERALL; Thread Series Designator: UNF. 11 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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