PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

10307Screw,machine

Kleinschmidt Inc · NSN 5305-00-521-8649 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-521-8649 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-521-8649. Primary manufacturer part number: 10307.
Features
  • Screw,machine — FSC 5305
  • Thread Length: 0.450 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
  • Screw Surface Treatment: PASSIVATE
  • Screw Material: STEEL CORROSION RESISTING
  • Width Between Flats: 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
  • Thread Class: 2A A
  • Thread Series Designator: UNF
  • Fastener Length: 0.500 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-521-8649, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Kleinschmidt Inc. Government technical data includes 17 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-521-8649
Primary Part Number10307
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerKleinschmidt Inc
StatusACTIVE
Thread Length0.450 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
Screw Surface TreatmentPASSIVATE
Screw MaterialSTEEL CORROSION RESISTING
Width Between Flats0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
Thread Class2A A
Thread Series DesignatorUNF
Fastener Length0.500 INCHES NOMINAL IN
Minimum Tensile Strength80000 POUNDS PER SQUARE INCH LBS
Thread Quantity Per Inch40
Nondefinitive Spec/std Data2 TYPE AND 10P STYLE
Nominal Thread Diameter0.138 INCHES IN
Head StyleHEXAGON
Thread DirectionRIGHT-HAND
Internal Drive StyleCROSS RECESS TYPE II
Head Height0.080 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
Screw Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
Screw Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5815-00-228-6708SC-C-69992-1 INTERCHANGEABLE
Bar,connecting,teletypewriter
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4730-00-511-167711-110-000039 INTERCHANGEABLE
Coupling,pipe
Brinkley Technology Group Llc Dba Hercules Manufacturing
5120-00-590-8030TL659U INTERCHANGEABLE
Alignment Tool,electronic Equipm
Joint Electronics Type Designation System
5365-00-726-204010307 INTERCHANGEABLE
Spacer,sleeve
Cae Usa Inc.
5306-00-733-7502 INTERCHANGEABLE
Bolt Bell Strainer
2520-00-769-5020301MA023P001 INTERCHANGEABLE
Differential Gear Unit
Raytheon Company Dba Raytheon Co
5133-00-988-5694DBCL7/64B INTERCHANGEABLE
Drill,twist
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
4440-01-186-0459 INTERCHANGEABLE
Limiter Assembly
6850-01-193-851110305 INTERCHANGEABLE
Antistatic Compound
Tandem Computers Inc
1310-01-219-393712972332 INTERCHANGEABLE
Repair Kit,cartridge,60 Millimet
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
Cross-Reference Index
Part NumberManufacturer
10307 Kleinschmidt Inc (USA)
FF-S-92 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5815-00-228-6708INTERCHANGEABLE
BAR,CONNECTING,TELETYPEWRITER
SC-C-69992-1
4730-00-511-1677INTERCHANGEABLE
COUPLING,PIPE
11-110-000039
5120-00-590-8030INTERCHANGEABLE
ALIGNMENT TOOL,ELECTRONIC EQUIPM
TL659U
5365-00-726-2040INTERCHANGEABLE
SPACER,SLEEVE
10307
5306-00-733-7502INTERCHANGEABLE
BOLT BELL STRAINER
2520-00-769-5020INTERCHANGEABLE
DIFFERENTIAL GEAR UNIT
301MA023P001
5133-00-988-5694INTERCHANGEABLE
DRILL,TWIST
DBCL7/64B
4440-01-186-0459INTERCHANGEABLE
LIMITER ASSEMBLY
6850-01-193-8511INTERCHANGEABLE
ANTISTATIC COMPOUND
10305
1310-01-219-3937INTERCHANGEABLE
REPAIR KIT,CARTRIDGE,60 MILLIMET
12972332
5330-01-276-4893INTERCHANGEABLE
GASKET
10307
5120-01-397-3276INTERCHANGEABLE
SOCKET,SOCKET WRENCH

Frequently Asked Questions

What is NSN 5305-00-521-8649?

NSN 5305-00-521-8649 is a Screw,machine, manufactured by Kleinschmidt Inc, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-521-8649?

NSN 5305-00-521-8649 has 2 cross-referenced part numbers: 10307 (Kleinschmidt Inc), FF-S-92 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5305-00-521-8649?

There are 12 known substitutes for 5305-00-521-8649: 5815-00-228-6708, 4730-00-511-1677, 5120-00-590-8030 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 10307?

Key specifications for 10307: Thread Length: 0.450 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Screw Surface Treatment: PASSIVATE; Screw Material: STEEL CORROSION RESISTING; Width Between Flats: 0.244 INCHES MINIMUM AND 0.250 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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