PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

001-020121-000Screw,cap,hexagon Head

Insitu, Inc. · NSN 5305-00-021-3806 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-021-3806 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-021-3806. Primary manufacturer part number: 001-020121-000.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Fastener Length: 1.500 INCHES NOMINAL IN
  • Thread Direction: RIGHT-HAND
  • Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL
  • Material: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL
  • Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Width Between Flats: 0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 302 or Steel Comp 303 or Steel Comp 304 or Steel Comp 305 or Steel Comp 316 Overall construction
General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-021-3806, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Insitu, Inc.. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 27 commercial cross-references from 21 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-021-3806
Primary Part Number001-020121-000
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerInsitu, Inc.
StatusCANCELLED
Fastener Length1.500 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
MaterialSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL
Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Width Between Flats0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread Quantity Per Inch13
Surface TreatmentPASSIVATE OVERALL
Head StyleHEXAGON
Head Height0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN
Nominal Thread Diameter0.500 INCHES IN
Thread Class2A A
Thread Length1.500 INCHES MAXIMUM IN
Minimum Tensile Strength80000 POUNDS PER SQUARE INCH LBS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5330-00-063-102416117 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
5977-00-284-835726946 INTERCHANGEABLE
Holder,electrical Contact Brush
Prestolite Electric Inc
5935-00-303-0764372-1078-000 INTERCHANGEABLE
Backshell,electrical Connector
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5360-00-304-75925972 INTERCHANGEABLE
Spring,helical,compression
Waterous Company
5331-00-350-9013 INTERCHANGEABLE
O-Ring
2530-00-431-6294 INTERCHANGEABLE
Frame Assembly,brake
4720-00-460-3915100R1 TYAT SZ4 INTERCHANGEABLE
Hose,nonmetallic
Sae International Dba Sae International
5905-00-476-4603 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
3030-00-528-3768 INTERCHANGEABLE
Belts,v,matched Set
5305-00-543-4406MS35307-370 INTERCHANGEABLE
Screw,cap,hexagon Head
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
16117 Tyco Fire Products Lp (USA)
FFS85TYPE2STYLE10P Federal Specifications Promulgated by General Services Administration Washington DC (USA)
26946 Dresser, Llc (USA)
D301087 FIND NO Control Flow, Inc. Dba Control Flow Inc (USA)
001-020121-000 PRIMARY Insitu, Inc. (USA)
5305PL0547716 Jednolity Indeks Materialowy - Uniform Material Index (POL)
5808684-2 Zf Industrieantriebe Witten Gmbh (DEU)
1C824J Dana Off Highway Products, Llc (USA)
5972 Terex Reedrill Dba Reedrill Texoma Div Terex Mining (USA)
5305000213806 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
MS35307-113 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
91102570 Coltec Industries Inc. Dba Fairbanks Morse Engine Div Fairbanks Morse Engine (USA)
MS35307-413 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
803-4385050 PIECE 116 Naval Ship Systems Command (USA)
MS35307-413 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
123-6267494 PC2 Naval Sea Systems Command (USA)
205-4510947-34 Rohr, Inc. Dba Rohr Industries Inc Div Rohr Inc., a Part of Collins Aerospace (USA)
5-4510947 Rohr, Inc. Dba Rohr Industries Inc Div Rohr Inc., a Part of Collins Aerospace (USA)
91102570 Fairbanks Morse, Llc (USA)
92-AV101-N-SYM-13D Mc Keon Rolling Steel Door Co Inc (USA)
Related Parts
5330-00-063-1024INTERCHANGEABLE
SEAL,PLAIN ENCASED
16117
5977-00-284-8357INTERCHANGEABLE
HOLDER,ELECTRICAL CONTACT BRUSH
26946
5935-00-303-0764INTERCHANGEABLE
BACKSHELL,ELECTRICAL CONNECTOR
372-1078-000
5360-00-304-7592INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
5972
5331-00-350-9013INTERCHANGEABLE
O-RING
2530-00-431-6294INTERCHANGEABLE
FRAME ASSEMBLY,BRAKE
4720-00-460-3915INTERCHANGEABLE
HOSE,NONMETALLIC
100R1 TYAT SZ4
5905-00-476-4603INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
3030-00-528-3768INTERCHANGEABLE
BELTS,V,MATCHED SET
5305-00-543-4406INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
MS35307-370
6685-00-585-5678INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,BIME
5340-00-598-5506INTERCHANGEABLE
PLUG,EXPANSION

Frequently Asked Questions

What is NSN 5305-00-021-3806?

NSN 5305-00-021-3806 is a Screw,cap,hexagon Head, manufactured by Insitu, Inc., classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-00-021-3806?

NSN 5305-00-021-3806 has 27 cross-referenced part numbers: 16117 (Tyco Fire Products Lp), FFS85TYPE2STYLE10P (Federal Specifications Promulgated by General Services Administration Washington DC), 26946 (Dresser, Llc), D301087 FIND NO (Control Flow, Inc. Dba Control Flow Inc), 001-020121-000 (Insitu, Inc.) and 22 more.

What NSN replaces 5305-00-021-3806?

There are 12 known substitutes for 5305-00-021-3806: 5330-00-063-1024, 5977-00-284-8357, 5935-00-303-0764 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 001-020121-000?

Key specifications for 001-020121-000: Fastener Length: 1.500 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND; Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL; Material: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-021-3806 still in active supply?

NSN 5305-00-021-3806 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.
PartsTable Design LLC · partstable.com