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NSN 5305-01-503-4425Government record, cited

Setscrew5305-01-503-4425

NSN 5305-01-503-4425 · NIIN 015034425 · Part number BL-4721
Breeze-Eastern Llc · FSC 5305 — Screws · FSG 53 — Hardware and Abrasives · CAGE 08484
Government record, cited
NSN 5305-01-503-4425 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-503-4425. Manufacturer of record part number: BL-4721.
Also searched as  5305-01-503-4425 · 5305015034425 · NIIN 015034425 · 01-503-4425 · FSC 5305 Screws · CAGE 08484 · BL-4721
Nearby stock numbers  ·
Features
  • Setscrew — FSC 5305
  • Fastener Length: 0.250 INCHES NOMINAL IN
  • Nominal Thread Diameter: 0.164 INCHES IN
  • Thread Direction: RIGHT-HAND
  • Point Style: HALF DOG
  • Thread Class: 2A A
  • Thread Quantity Per Inch: 32
  • Material: STEEL CORROSION RESISTING OVERALL
Identification
  • NSN: 5305-01-503-4425
  • NIIN: 015034425
  • FSC: 5305 — Screws
  • FSG: 53 — Hardware and Abrasives
  • Primary part number: BL-4721
  • Manufacturer: Breeze-Eastern Llc
General Description

The Setscrew, cataloged under National Stock Number 5305-01-503-4425, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Breeze-Eastern Llc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-503-4425
Primary Part NumberBL-4721
Item NameSetscrew
FSC / FSG5305 / 53 — Screws
ManufacturerBreeze-Eastern Llc
StatusACTIVE
Fastener Length0.250 INCHES NOMINAL IN
Nominal Thread Diameter0.164 INCHES IN
Thread DirectionRIGHT-HAND
Point StyleHALF DOG
Thread Class2A A
Thread Quantity Per Inch32
MaterialSTEEL CORROSION RESISTING OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
BL-4721 Sps Technologies, Llc Dba PB Fasteners (USA)
BL-4721 PRIMARY Breeze-Eastern Llc (USA)
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.
5305-00-001-5016
5305-00-001-5016 · Item name not on file
5305-00-001-9160
5305-00-001-9160 · Item name not on file
5305-00-001-9629
SCREW,ADJUSTING CLEVIS
5305-00-001-9742
5305-00-001-9742 · Item name not on file
5305-00-001-9768
SCREW,CAP,SOCKET HEAD
5305-00-003-4306
SCREW,MACHINE
5305-00-003-6694
5305-00-003-6694 · Item name not on file
5305-00-003-6753
5305-00-003-6753 · Item name not on file

Frequently Asked Questions

What is NSN 5305-01-503-4425?

NSN 5305-01-503-4425 is a Setscrew, manufactured by Breeze-Eastern Llc, classified under FSC 5305, Screws. Status: active.

What part numbers are listed for NSN 5305-01-503-4425?

NSN 5305-01-503-4425 has 2 manufacturer part numbers on file: BL-4721 (Sps Technologies, Llc Dba PB Fasteners), BL-4721 (Breeze-Eastern Llc).

What are the specifications of BL-4721?

Key specifications for BL-4721: Fastener Length: 0.250 INCHES NOMINAL IN; Nominal Thread Diameter: 0.164 INCHES IN; Thread Direction: RIGHT-HAND; Point Style: HALF DOG. 8 specifications are documented in the U.S. Government catalog.

Is NSN 5305-01-503-4425 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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