PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

61-256Screw,externally Relieved Body

Elma Electronic Incorporated · NSN 5305-01-617-3014 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-617-3014 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-617-3014. Primary manufacturer part number: 61-256.
Features
  • Screw,externally Relieved Body — FSC 5305
  • Fastener Length: 11.3 MILLIMETERS NOMINAL MM
  • External Thread Tolerance Class: 6G G
  • Thread Direction: RIGHT-HAND
  • Internal Drive Style: SLOT
  • Head Diameter: 5.0 MILLIMETERS NOMINAL MM
  • Nominal Thread Diameter: 2.5 MILLIMETERS MM
  • Head Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-617-3014, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Elma Electronic Incorporated. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-617-3014
Primary Part Number61-256
Item NameScrew,externally Relieved Body
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerElma Electronic Incorporated
StatusACTIVE
Fastener Length11.3 MILLIMETERS NOMINAL MM
External Thread Tolerance Class6G G
Thread DirectionRIGHT-HAND
Internal Drive StyleSLOT
Head Diameter5.0 MILLIMETERS NOMINAL MM
Nominal Thread Diameter2.5 MILLIMETERS MM
Head StyleROUND
MaterialSTEEL OVERALL
Thread Series DesignatorM
Surface TreatmentNICKEL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3455-00-260-332219832 INTERCHANGEABLE
Reamer,machine
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
3455-00-357-0315MCE-06100-1250 INTERCHANGEABLE
Cutter,milling,fly
Mc Engineering Co. Dba Mc Engineering Co.
4820-01-135-16766125-6 INTERCHANGEABLE
Valve,restrictor Check
Pneudraulics, Inc.
1680-01-175-945861256 INTERCHANGEABLE
Cushion,seat,aircraft
The Boeing Company Div Defense
6680-01-248-4168XM-36485-29-3300-W-H INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
Cross-Reference Index
Part NumberManufacturer
1904-37 Elma Electronic Incorporated (USA)
61-256 PRIMARY Elma Electronic Incorporated (USA)
Related Parts
3455-00-260-3322INTERCHANGEABLE
REAMER,MACHINE
19832
3455-00-357-0315INTERCHANGEABLE
CUTTER,MILLING,FLY
MCE-06100-1250
4820-01-135-1676INTERCHANGEABLE
VALVE,RESTRICTOR CHECK
6125-6
1680-01-175-9458INTERCHANGEABLE
CUSHION,SEAT,AIRCRAFT
61256
6680-01-248-4168INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
XM-36485-29-3300-W-H

Frequently Asked Questions

What is NSN 5305-01-617-3014?

NSN 5305-01-617-3014 is a Screw,externally Relieved Body, manufactured by Elma Electronic Incorporated, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-617-3014?

NSN 5305-01-617-3014 has 2 cross-referenced part numbers: 1904-37 (Elma Electronic Incorporated), 61-256 (Elma Electronic Incorporated).

What NSN replaces 5305-01-617-3014?

There are 5 known substitutes for 5305-01-617-3014: 3455-00-260-3322, 3455-00-357-0315, 4820-01-135-1676 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 61-256?

Key specifications for 61-256: Fastener Length: 11.3 MILLIMETERS NOMINAL MM; External Thread Tolerance Class: 6G G; Part Name Assigned by Controlling Agency: ROUND HEAD SCREW SLOTTED; Thread Direction: RIGHT-HAND. 12 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com