PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-I-8846Insert,screw Thread

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5325-01-399-1963 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-01-399-1963 — this item is cataloged by the U.S. Government under National Stock Number 5325-01-399-1963. Primary manufacturer part number: MIL-I-8846.
Features
  • Insert,screw Thread — FSC 5325
  • Length: 0.328 INCHES NOMINAL IN
  • Style Designator: COIL
  • Thread Series Designator: UNF
  • Material Document and Classification: FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
  • Thread Quantity Per Inch: 36
  • Thread Length: 0.328 INCHES NOMINAL IN
  • Insert Size: 0.164 IN.OD IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 304 Overall construction
General Description

The Insert,screw Thread, cataloged under National Stock Number 5325-01-399-1963, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 12 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5325-01-399-1963
Primary Part NumberMIL-I-8846
Item NameInsert,screw Thread
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Length0.328 INCHES NOMINAL IN
Style DesignatorCOIL
Thread Series DesignatorUNF
Material Document and ClassificationFED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Thread Quantity Per Inch36
Thread Length0.328 INCHES NOMINAL IN
Insert Size0.164 IN.OD IN
Thread DirectionRIGHT-HAND
Thread Class3B
Surface TreatmentCADMIUM OVERALL
MaterialSTEEL COMP 304 OVERALL
Nominal Thread Size0.164 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5325-00-803-7150MS21209F8-10 INTERCHANGEABLE
Insert,screw Thread
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5325-00-843-0003 INTERCHANGEABLE
Insert,screw Thread
5325-01-364-7728 INTERCHANGEABLE
Insert,screw Thread
5325-01-365-1219MS21209C0230L INTERCHANGEABLE
Insert,screw Thread
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5325-01-387-0517 INTERCHANGEABLE
Insert,screw Thread
5325-01-395-5075MS21209C1-10L INTERCHANGEABLE
Insert,screw Thread
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5325-01-421-8404MS21209C0825P INTERCHANGEABLE
Insert,screw Thread
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5325-01-425-2454MS21209F7-10L INTERCHANGEABLE
Insert,screw Thread
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5325-01-468-0061 INTERCHANGEABLE
Insert,screw Thread
5325-01-500-44114691-6CN0333 INTERCHANGEABLE
Insert,screw Thread
Emhart Teknologies Llc Dba Pop Fasteners Div Emhart Inds
Cross-Reference Index
Part NumberManufacturer
MIL-I-8846 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS21209F0820P Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5325-00-803-7150INTERCHANGEABLE
INSERT,SCREW THREAD
MS21209F8-10
5325-00-843-0003INTERCHANGEABLE
INSERT,SCREW THREAD
5325-01-364-7728INTERCHANGEABLE
INSERT,SCREW THREAD
5325-01-365-1219INTERCHANGEABLE
INSERT,SCREW THREAD
MS21209C0230L
5325-01-387-0517INTERCHANGEABLE
INSERT,SCREW THREAD
5325-01-395-5075INTERCHANGEABLE
INSERT,SCREW THREAD
MS21209C1-10L
5325-01-421-8404INTERCHANGEABLE
INSERT,SCREW THREAD
MS21209C0825P
5325-01-425-2454INTERCHANGEABLE
INSERT,SCREW THREAD
MS21209F7-10L
5325-01-468-0061INTERCHANGEABLE
INSERT,SCREW THREAD
5325-01-500-4411INTERCHANGEABLE
INSERT,SCREW THREAD
4691-6CN0333

Frequently Asked Questions

What is NSN 5325-01-399-1963?

NSN 5325-01-399-1963 is a Insert,screw Thread, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5325 (No Item Name Available). Status: active.

What are the part numbers for NSN 5325-01-399-1963?

NSN 5325-01-399-1963 has 2 cross-referenced part numbers: MIL-I-8846 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS21209F0820P (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5325-01-399-1963?

There are 10 known substitutes for 5325-01-399-1963: 5325-00-803-7150, 5325-00-843-0003, 5325-01-364-7728 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-I-8846?

Key specifications for MIL-I-8846: Length: 0.328 INCHES NOMINAL IN; Style Designator: COIL; Thread Series Designator: UNF; Material Document and Classification: FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL. 12 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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