Screw, Cap, Hexagon Head5305-01-421-2042

NSN 5305-01-421-2042 · NIIN 014212042

FSC 5305 — Screws · FSG 53 — Hardware and Abrasives

Government record, cited

Also searched as 5305-01-421-2042 · 5305014212042 · NIIN 014212042 · 01-421-2042 · FSC 5305 Screws · 0.31218UNC2A0.875T1G400SAA · MIL-DTL-1222 · MIL-S-1222 · 215-4775639ITEM5

Nearby stock numbers ← 5305-01-421-2041 Setscrew · 5305-01-421-2047 Thumbscrew →

5305-01-421-2042 — Screws

Features

Screw,cap,hexagon Head — FSC 5305
Head Height: 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
Fastener Length: 0.875 INCHES NOMINAL IN
Thread Length: 0.875 INCHES NOMINAL IN
Nominal Thread Diameter: 0.312 INCHES IN
Head Style: HEXAGON
Thread Direction: RIGHT-HAND
Width Between Flats: 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN

Identification

NSN: 5305-01-421-2042
NIIN: 014212042
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives

General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-421-2042, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5305-01-421-2042
Item Name	Screw,cap,hexagon Head
FSC / FSG	5305 / 53 — Screws
Status	ACTIVE
Head Height	0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
Fastener Length	0.875 INCHES NOMINAL IN
Thread Length	0.875 INCHES NOMINAL IN
Nominal Thread Diameter	0.312 INCHES IN
Head Style	HEXAGON
Thread Direction	RIGHT-HAND
Width Between Flats	0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
Nondefinitive Spec/std Data	1 TYPE AND 400 GRADE
Thread Class	2A A
Thread Quantity Per Inch	18
Material	NICKEL ALLOY 400 OVERALL
Thread Series Designator	UNIFIED NATIONAL COARSE (UNC)

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
0.31218UNC2A0.875T1G400SAA	3/1 Design control — primary reference U.S. Government activity
MIL-DTL-1222	4/1 Identification reference U.S. Government activity
MIL-S-1222	5/9 Secondary reference U.S. Government activity
215-4775639ITEM5	5/2 Secondary reference U.S. Government activity

No interchangeability data on file.

Other items in FSC 5305 — Screws

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5305-00-000-0094

SCREW,CLOSE TOLERANCE

5305-00-000-0094

SCREW,CLOSE TOLERANCE

5305-00-000-0094

SCREW,CLOSE TOLERANCE

5305-00-000-1397

5305-00-000-1397 · Item name not on file

5305-00-000-2625

5305-00-000-2625 · Item name not on file

5305-00-000-3669

5305-00-000-3669 · Item name not on file

5305-00-000-3830

5305-00-000-3830 · Item name not on file

5305-00-000-3831

5305-00-000-3831 · Item name not on file

Frequently Asked Questions

What is NSN 5305-01-421-2042?

NSN 5305-01-421-2042 is a Screw,cap,hexagon Head, classified under FSC 5305, Screws. Status: active.

What are the specifications of 5305-01-421-2042?

Key specifications for 5305-01-421-2042: Head Height: 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN; Fastener Length: 0.875 INCHES NOMINAL IN; Thread Length: 0.875 INCHES NOMINAL IN; Nominal Thread Diameter: 0.312 INCHES IN. 12 specifications are documented in the U.S. Government catalog.

Is NSN 5305-01-421-2042 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.

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

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