PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS21209F5-10Insert,screw Thread

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5325-00-218-1518 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-218-1518 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-218-1518. Primary manufacturer part number: MS21209F5-10.
Features
  • Insert,screw Thread — FSC 5325
  • Length: 0.312 INCHES NOMINAL IN
  • Insert Size: 0.380 IN.MIN,0.400 IN. MAX FREE OD IN
  • Style Designator: COIL
  • Thread Series Designator: UNF
  • Material: STEEL COMP 304 OVERALL
  • Thread Quantity Per Inch: 24
  • Material Document and Classification: FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
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 5325-00-218-1518, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 21 commercial cross-references from 14 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5325-00-218-1518
Primary Part NumberMS21209F5-10
Item NameInsert,screw Thread
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusCANCELLED
Length0.312 INCHES NOMINAL IN
Insert Size0.380 IN.MIN,0.400 IN. MAX FREE OD IN
Style DesignatorCOIL
Thread Series DesignatorUNF
MaterialSTEEL COMP 304 OVERALL
Thread Quantity Per Inch24
Material Document and ClassificationFED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Thread Class3B
Nominal Thread Size0.312 INCHES IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5315-00-058-9698MS16562-191 INTERCHANGEABLE
Pin,spring
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
3591-5CNX5-16 Stanley Engineered Fastening Llc (USA)
MS21209F5-10 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
88432-3 Triumph Engine Control Systems Llc (USA)
MS21209F5-10 Helical Wire Inc (USA)
3591-5CNX312 Stanley Engineered Fastening Llc (USA)
3591-5CN0312 Stanley Engineered Fastening Llc (USA)
5340002181518 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
MS21209F5-10 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
60A5A69-12 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
8048878 Us Army Aviation and Missile Command (USA)
10119067 Nimikkeistokeskus Ncb Finland (FIN)
3591-5CNX313 Stanley Engineered Fastening Llc (USA)
3591-5CN0312 Bollhoff Otalu (FRA)
NASM21209 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
3591-5CNX313 New Haven Mfg Corp (USA)
01320767004 Bollhoff Otalu (FRA)
342427 Honeywell International Inc Div Aerospace-South Bend (bendix Dr) (USA)
69679-5-20 Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
5325PL0959463 Jednolity Indeks Materialowy - Uniform Material Index (POL)
3591-5CN312 Stanley Engineered Fastening Llc (USA)
Related Parts
5315-00-058-9698INTERCHANGEABLE
PIN,SPRING
MS16562-191

Frequently Asked Questions

What is NSN 5325-00-218-1518?

NSN 5325-00-218-1518 is a Insert,screw Thread, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5325 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5325-00-218-1518?

NSN 5325-00-218-1518 has 21 cross-referenced part numbers: 3591-5CNX5-16 (Stanley Engineered Fastening Llc), MS21209F5-10 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), 88432-3 (Triumph Engine Control Systems Llc), MS21209F5-10 (Helical Wire Inc), 3591-5CNX312 (Stanley Engineered Fastening Llc) and 16 more.

What NSN replaces 5325-00-218-1518?

There is 1 known substitute for 5325-00-218-1518: 5315-00-058-9698. Verify interchangeability with system specifications before substitution.

What are the specifications of MS21209F5-10?

Key specifications for MS21209F5-10: End Item Identification: W/S: CLOSE IN WEAPON SYSTEM (CIWS-PHALANX); AIRCRAFT, (AC-130H, MC-130H, EC-130E, HC-130); AIRCRAFT, AIRLIFTER C-17A; MISSILE, TOMAHAWK; HELICOPTER, ADVANCE ATTACK, AH-1W; SPRUANCE CLASS DD (963); MISSILE, ALL-WEATHER ANTI-SHIP, HARPOON (AGM-84); LOS ANGELES CLASS SSN (688); CONSOLIDATED TARGETS; ENGINE, AIRCRAFT, TF-33-P-7 (C-141A/B) A; Length: 0.312 INCHES NOMINAL IN; Insert Size: 0.380 IN.MIN,0.400 IN. MAX FREE OD IN; Style Designator: COIL. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5325-00-218-1518 still in active supply?

NSN 5325-00-218-1518 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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