NSN 5305-01-688-0776 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-688-0776. Manufacturer of record part number: FTD7028 HHS-12-4-10-A-P.
Nearby stock numbers← 5305-01-688-0755 Screw, Cap, Socket Head
·
5305-01-688-0781 Screw, Cap, Socket Head →
5305-01-688-0776 — Screws
Features
Screw,cap,socket Head — FSC 5305
Width Across Flats: 0.156 INCHES NOMINAL IN
Head Height: 0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
Fastener Length: 1.139 INCHES NOMINAL IN
Surface Treatment Document and Classification: QQ-P-35, TYPE II OR TYPE VIII FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Thread Length: 0.844 INCHES NOMINAL IN
Material Document and Classification: AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Nominal Thread Diameter: 0.2500 INCHES IN
Identification
NSN: 5305-01-688-0776
NIIN: 016880776
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives
Primary part number: FTD7028 HHS-12-4-10-A-P
Manufacturer: Fastener Technology Corp
General Description
The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-688-0776, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Fastener Technology Corp. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5305-01-688-0776
Primary Part Number
FTD7028 HHS-12-4-10-A-P
Item Name
Screw,cap,socket Head
FSC / FSG
5305 / 53 — Screws
Manufacturer
Fastener Technology Corp
Status
ACTIVE
Width Across Flats
0.156 INCHES NOMINAL IN
Head Height
0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
Fastener Length
1.139 INCHES NOMINAL IN
Surface Treatment Document and Classification
QQ-P-35, TYPE II OR TYPE VIII FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Thread Length
0.844 INCHES NOMINAL IN
Material Document and Classification
AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Nominal Thread Diameter
0.2500 INCHES IN
Head Style
HEXAGON
Thread Direction
RIGHT-HAND
Width Between Flats
0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Surface Treatment
PASSIVATE OVERALL
Internal Drive Style
HEXAGON
Thread Class
3A A
Thread Quantity Per Inch
28
Material
STEEL CORROSION RESISTING OVERALL
Thread Series Designator
UNF
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
⇄Related Items9
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5305-01-688-1834FTD7028HHS-10-5-3APPOSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)Fastener Technology Corp
5305-01-688-1835FTD7028HHS-10-2-1APPOSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)Fastener Technology Corp
5305-01-688-1836FTD7028HHS-12-12-13APOSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)Fastener Technology Corp
5305-01-688-1838FTD7028HHS-10-7-4APPOSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)Fastener Technology Corp
5305-01-688-1839FTD7028HHS-8-1-1APPOSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)Fastener Technology Corp
5305-01-688-2280FTD7028HHS-10-5-2APPOSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)Fastener Technology Corp
5305-01-688-2283FTD7028HHS-10-5-4APPOSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)Fastener Technology Corp
5305-01-688-2284FTD7028HHS-10-7-5APPOSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)Fastener Technology Corp
5305-01-688-3538FTD7028HHS-10-6-6APPOSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)Fastener Technology Corp
NSN 5305-01-688-0776 is a Screw,cap,socket Head, manufactured by Fastener Technology Corp, classified under FSC 5305, Screws. Status: active.
What part numbers are listed for NSN 5305-01-688-0776?
NSN 5305-01-688-0776 has 1 manufacturer part number on file: FTD7028 HHS-12-4-10-A-P (Fastener Technology Corp).
What NSN replaces 5305-01-688-0776?
9 possible matches (shared part number, not a government interchangeability claim): 5305-01-688-1834, 5305-01-688-1835, 5305-01-688-1836. Verify interchangeability with system specifications before substitution.
What are the specifications of FTD7028 HHS-12-4-10-A-P?
Key specifications for FTD7028 HHS-12-4-10-A-P: Width Across Flats: 0.156 INCHES NOMINAL IN; Head Height: 0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN; Fastener Length: 1.139 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35, TYPE II OR TYPE VIII FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 16 specifications are documented in the U.S. Government catalog.
Is NSN 5305-01-688-0776 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.