PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1093446P28Screw,cap,socket Head

Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems · NSN 5305-00-287-6398 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-287-6398 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-287-6398. Primary manufacturer part number: 1093446P28.
Features
  • Screw,cap,socket Head — FSC 5305
  • Material: PLASTIC POLYAMIDE NYLON LOCKING FEATURE
  • Locking Feature: PATCH THREADS
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Thread Direction: RIGHT-HAND
  • Thread Length: 0.294 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
  • Surface Treatment: PAINT FASTENER
  • Thread Quantity Per Inch: 32
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Plastic Polyamide Nylon Locking Feature construction
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-287-6398, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-287-6398
Primary Part Number1093446P28
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerBae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
StatusACTIVE
MaterialPLASTIC POLYAMIDE NYLON LOCKING FEATURE
Locking FeaturePATCH THREADS
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Thread DirectionRIGHT-HAND
Thread Length0.294 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Surface TreatmentPAINT FASTENER
Thread Quantity Per Inch32
Internal Drive StyleCROSS RECESS TYPE 1
Head StylePAN
Head Height0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN
MaterialSTEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 302B OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 308 OR STEEL COMP 309 OR STEEL COMP 309S OR STEEL COMP 310 OR STEEL COMP 310S OR STEEL COMP 314 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OR STEEL COMP 384 OR STEEL COMP 385 FASTENER
ColorGRAY/GREY FASTENER
Thread Class2A A
Head Diameter0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
Fastener Length0.344 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Nominal Thread Diameter0.138 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5305-00-054-6664 INTERCHANGEABLE
Screw,machine
5305-00-054-6673 INTERCHANGEABLE
Screw,machine
5305-00-162-3951 INTERCHANGEABLE
Screw,machine
5305-00-630-355770A0708-1 INTERCHANGEABLE
Screw,externally Relieved Body
Crane Electronics, Inc.
5305-01-081-9454229-008358 INTERCHANGEABLE
Screw,externally Relieved Body
Bae Systems (operations) Limited
5305-01-499-9305 INTERCHANGEABLE
Screw,machine
Cross-Reference Index
Part NumberManufacturer
1093446P28 PRIMARY Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems (USA)
MS51957 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5305-00-054-6664INTERCHANGEABLE
SCREW,MACHINE
5305-00-054-6673INTERCHANGEABLE
SCREW,MACHINE
5305-00-162-3951INTERCHANGEABLE
SCREW,MACHINE
5305-00-630-3557INTERCHANGEABLE
SCREW,EXTERNALLY RELIEVED BODY
70A0708-1
5305-01-081-9454INTERCHANGEABLE
SCREW,EXTERNALLY RELIEVED BODY
229-008358
5305-01-499-9305INTERCHANGEABLE
SCREW,MACHINE

Frequently Asked Questions

What is NSN 5305-00-287-6398?

NSN 5305-00-287-6398 is a Screw,cap,socket Head, manufactured by Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-287-6398?

NSN 5305-00-287-6398 has 2 cross-referenced part numbers: 1093446P28 (Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems), MS51957 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5305-00-287-6398?

There are 6 known substitutes for 5305-00-287-6398: 5305-00-054-6664, 5305-00-054-6673, 5305-00-162-3951 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1093446P28?

Key specifications for 1093446P28: Material: PLASTIC POLYAMIDE NYLON LOCKING FEATURE; Locking Feature: PATCH THREADS; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Thread Direction: RIGHT-HAND. 16 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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