PartsTable TECHNICAL DATA SHEET
AUGUST 2026Technical Data Sheet

1498528Screw,externally Relieved Body

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5305-00-685-2977 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-685-2977 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-685-2977. Primary manufacturer part number: 1498528.
Features
  • Screw,externally Relieved Body — FSC 5305
  • Surface Treatment: PASSIVATE OVERALL
  • Material Document and Classification: MIL-S-7720 MIL SPEC 1ST MATERIAL RESPONSE OR ASTM A582 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A582 ASSN STD 3RD MATERIAL RESPONSE OVERALL
  • Head Height: 0.370 INCHES NOMINAL IN
  • Distance From Largest Bearing Surface of Head to End of First Diameter: 0.680 INCHES NOMINAL IN
  • Thread Direction: RIGHT-HAND
  • Internal Drive Style: SLOT
  • Thread Class: 2A A
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 302 or Steel Comp 303 or Steel Comp 303SE or Steel Comp 316 Overall construction
General Description

The Screw,externally Relieved Body, cataloged under National Stock Number 5305-00-685-2977, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-685-2977
Primary Part Number1498528
Item NameScrew,externally Relieved Body
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Surface TreatmentPASSIVATE OVERALL
Material Document and ClassificationMIL-S-7720 MIL SPEC 1ST MATERIAL RESPONSE OR ASTM A582 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A582 ASSN STD 3RD MATERIAL RESPONSE OVERALL
Head Height0.370 INCHES NOMINAL IN
Distance From Largest Bearing Surface of Head to End of First Diameter0.680 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Internal Drive StyleSLOT
Thread Class2A A
Head StyleKNURLED NO. 4
Thread Quantity Per Inch32
Externally Relieved Body Diameter Quantity1
Nominal Thread Diameter0.190 INCHES IN
Thread Length0.380 INCHES MINIMUM IN
Fastener Length1.062 INCHES NOMINAL IN
Head Diameter0.625 INCHES NOMINAL IN
First Diameter From Head0.140 INCHES NOMINAL IN
MaterialSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 316 OVERALL
Thread Series DesignatorUNF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5365-01-487-6763581-6726890-33 INTERCHANGEABLE
Spacer,ring
Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
1498528 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
5365-01-487-6763INTERCHANGEABLE
SPACER,RING
581-6726890-33

Frequently Asked Questions

What is NSN 5305-00-685-2977?

NSN 5305-00-685-2977 is a Screw,externally Relieved Body, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-685-2977?

NSN 5305-00-685-2977 has 1 cross-referenced part number: 1498528 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 5305-00-685-2977?

There is 1 known substitute for 5305-00-685-2977: 5365-01-487-6763. Verify interchangeability with system specifications before substitution.

What are the specifications of 1498528?

Key specifications for 1498528: Surface Treatment: PASSIVATE OVERALL; Material Document and Classification: MIL-S-7720 MIL SPEC 1ST MATERIAL RESPONSE OR ASTM A582 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A582 ASSN STD 3RD MATERIAL RESPONSE OVERALL; Head Height: 0.370 INCHES NOMINAL IN; Distance From Largest Bearing Surface of Head to End of First Diameter: 0.680 INCHES NOMINAL IN. 18 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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