PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6777Screw,externally Relieved Body

Concord Instruments Corp · NSN 5305-00-208-2619 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-208-2619 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-208-2619. Primary manufacturer part number: 6777.
Features
  • Screw,externally Relieved Body — FSC 5305
  • Head Height: 0.161 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN
  • First Diameter From Head: 0.250 INCHES NOMINAL IN
  • Internal Drive Style: SLOT
  • Fastener Length: 0.344 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
  • Head Style: ROUND
  • Externally Relieved Body Diameter Quantity: 2
  • Second Diameter From Head: 0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy Overall construction
General Description

The Screw,externally Relieved Body, cataloged under National Stock Number 5305-00-208-2619, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Concord Instruments Corp. 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-208-2619
Primary Part Number6777
Item NameScrew,externally Relieved Body
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerConcord Instruments Corp
StatusACTIVE
Head Height0.161 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN
First Diameter From Head0.250 INCHES NOMINAL IN
Internal Drive StyleSLOT
Fastener Length0.344 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Head StyleROUND
Externally Relieved Body Diameter Quantity2
Second Diameter From Head0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
Thread Quantity Per Inch28
Thread DirectionRIGHT-HAND
MaterialCOPPER ALLOY OVERALL
Head Diameter0.443 INCHES MINIMUM AND 0.472 INCHES MAXIMUM IN
Thread Series DesignatorUNF
Thread Class2A A
Nominal Thread Diameter0.250 INCHES IN
Thread Length0.194 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
Distance From Largest Bearing Surface of Head to End of First Diameter0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
Distance From Largest Bearing Surface of Head to End of Second Diameter0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
2995-00-147-14816777 INTERCHANGEABLE
Clip
Textron Lycoming Inc Williamsport Plant
2920-00-312-4619 INTERCHANGEABLE
Winding,motor Field
3110-00-554-5962 INTERCHANGEABLE
Bearing,ball,annular
5960-00-773-80136777 INTERCHANGEABLE
Electron Tube
Triton Services Incorporated Dba Electron Technology Division Div Electron Technology Division
3020-01-551-2463 INTERCHANGEABLE
Gear,ratchet
5998-01-719-06616777 INTERCHANGEABLE
Circuit Card Assembly
Technobox Inc
Cross-Reference Index
Part NumberManufacturer
6777 Concord Instruments Corp (USA)
Related Parts
2995-00-147-1481INTERCHANGEABLE
CLIP
6777
2920-00-312-4619INTERCHANGEABLE
WINDING,MOTOR FIELD
3110-00-554-5962INTERCHANGEABLE
BEARING,BALL,ANNULAR
5960-00-773-8013INTERCHANGEABLE
ELECTRON TUBE
6777
3020-01-551-2463INTERCHANGEABLE
GEAR,RATCHET
5998-01-719-0661INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
6777

Frequently Asked Questions

What is NSN 5305-00-208-2619?

NSN 5305-00-208-2619 is a Screw,externally Relieved Body, manufactured by Concord Instruments Corp, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-208-2619?

NSN 5305-00-208-2619 has 1 cross-referenced part number: 6777 (Concord Instruments Corp).

What NSN replaces 5305-00-208-2619?

There are 6 known substitutes for 5305-00-208-2619: 2995-00-147-1481, 2920-00-312-4619, 3110-00-554-5962 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6777?

Key specifications for 6777: Head Height: 0.161 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN; First Diameter From Head: 0.250 INCHES NOMINAL IN; Internal Drive Style: SLOT; Fastener Length: 0.344 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN. 17 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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