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NSN 5305-01-273-2270Government record, cited
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Screw, Cap, Socket Head5305-01-273-2270

NSN 5305-01-273-2270 · NIIN 012732270
FSC 5305 — Screws · FSG 53 — Hardware and Abrasives
Government record, cited
Also searched as  5305-01-273-2270 · 5305012732270 · NIIN 012732270 · 01-273-2270 · FSC 5305 Screws · NASM24667 · MS24667-8L · FF-S-86
Nearby stock numbers  ·
L 0.345 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN ⌀0.138 INCHES IN UNIFIED NATIONAL COARSE (UNC) BOLT/SCREW PROFILE
5305-01-273-2270 — Screws
Features
  • Screw,cap,socket Head — FSC 5305
  • Width Across Flats: 0.078 INCHES NOMINAL IN
  • Fastener Length: 0.345 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
  • Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE FASTENER
  • Thread Length: 0.186 INCHES MINIMUM AND 0.278 INCHES MAXIMUM IN
  • Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM FASTENER
  • Material Document and Classification: MIL-F-18240 MIL SPEC SINGLE MATERIAL RESPONSE LOCKING FEATURE
  • Material Document and Classification: 66 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
Identification
  • NSN: 5305-01-273-2270
  • NIIN: 012732270
  • FSC: 5305 — Screws
  • FSG: 53 — Hardware and Abrasives
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-273-2270, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 11 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-273-2270
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — Screws
StatusACTIVE
Width Across Flats0.078 INCHES NOMINAL IN
Fastener Length0.345 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE FASTENER
Thread Length0.186 INCHES MINIMUM AND 0.278 INCHES MAXIMUM IN
Hardness Rating36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM FASTENER
Material Document and ClassificationMIL-F-18240 MIL SPEC SINGLE MATERIAL RESPONSE LOCKING FEATURE
Material Document and Classification66 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
Nominal Thread Diameter0.138 INCHES IN
Head StyleFLAT COUNTERSUNK
Thread DirectionRIGHT-HAND
Nondefinitive Spec/std Data4 TYPE
Locking FeaturePATCH OR STRIP THREADS
Surface TreatmentCADMIUM AND CHROMATE FASTENER
Internal Drive StyleHEXAGON
Countersink Angle80.0 DEGREES MINIMUM AND 84.0 DEGREES MAXIMUM
Thread Class3A A
Thread Quantity Per Inch32
MaterialPLASTIC LOCKING FEATURE
MaterialSTEEL FASTENER
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Head Diameter0.261 INCHES MINIMUM AND 0.307 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 11
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5305-01-322-8763NASM24667 POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-01-343-1760MS24667-51L POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-01-347-7110MS24667-59ZL POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-01-390-4235MS24667-69 POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-01-399-0166MS24667-98 POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-01-569-1891 POSSIBLE MATCH
SCREW,CAP,HEXAGON HEAD
Possible match (shared part number)
5305-01-569-1930 POSSIBLE MATCH
SCREW,CAP,HEXAGON HEAD
Possible match (shared part number)
5305-01-569-1932 POSSIBLE MATCH
SCREW,CAP,HEXAGON HEAD
Possible match (shared part number)
5305-01-665-7067NASM24667-32ZL POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-01-699-990506657-179 POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
ReferenceMeaning
NASM24667 2/2 Government specification standardization
U.S. Government activity
MS24667-8L 5/9 Secondary reference
U.S. Government activity
FF-S-86 4/1 Identification reference
U.S. Government activity
Related Parts
5305-01-322-8763POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
NASM24667
5305-01-343-1760POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
MS24667-51L
5305-01-347-7110POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
MS24667-59ZL
5305-01-390-4235POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
MS24667-69
5305-01-399-0166POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
MS24667-98
5305-01-569-1891POSSIBLE MATCH
SCREW,CAP,HEXAGON HEAD
5305-01-569-1930POSSIBLE MATCH
SCREW,CAP,HEXAGON HEAD
5305-01-569-1932POSSIBLE MATCH
SCREW,CAP,HEXAGON HEAD
5305-01-665-7067POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
NASM24667-32ZL
5305-01-699-9905POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
06657-179
5305-01-734-1834POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
MS24667-28BL

Frequently Asked Questions

What is NSN 5305-01-273-2270?

NSN 5305-01-273-2270 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.

What NSN replaces 5305-01-273-2270?

11 possible matches (shared part number, not a government interchangeability claim): 5305-01-322-8763, 5305-01-343-1760, 5305-01-347-7110. Verify interchangeability with system specifications before substitution.

What are the specifications of 5305-01-273-2270?

Key specifications for 5305-01-273-2270: Width Across Flats: 0.078 INCHES NOMINAL IN; Fastener Length: 0.345 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE FASTENER; Thread Length: 0.186 INCHES MINIMUM AND 0.278 INCHES MAXIMUM IN. 21 specifications are documented in the U.S. Government catalog.

Is NSN 5305-01-273-2270 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

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✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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