Aerospace Hardware Store

Aerospace

Hardware

5305-01-266-8370

Hexagon Head Cap Screw

Specifications, compliance details, and sourcing options for this NSN. Request a quote to confirm availability, pricing, and lead time.

Request for Quote

Send us a request for quote using the form below. Our team will promptly provide you with the latest pricing and availability details.

AS9120 ISO9001 Aviation Suppliers Association Global Shipping

Featured Parts

42240
5330-01-128-8837
Gasket
422405
5305-00-042-2405
Machine Screw
422407
5305-00-042-2407
Machine Screw
42240881
5340-01-420-0751
Butt Hinge
42241-1
5940-01-493-9006
Quick Disconnect Terminal
42241-2
5940-01-285-5147
Quick Disconnect Terminal
42241280
5330-01-342-7795
Gasket
42241281
5340-01-306-2697
Furniture Glide

Need Assistance?

Our catalog is extensive, but we understand that sometimes specific needs might not be immediately available. If you could not find the exact products you were searching for, we are here to help!

Contact us directly, and our team will assist you in finding the perfect solution for your requirements.

Contact Us

Certified Supplier

Order with confidence. We are a valued certified supplier serving customers in the military and aerospace industries.

  • Genuine Manufacturers Parts
  • 100% Product Inspection
  • 7 Year Sales Record Retention
  • Fast On-Time Delivery
  • HAZMAT Certified
  • Global Shipping

Official Item Classification

Name
Hexagon Head Cap Screw
(NSN) National Stock Number
5305-01-266-8370
(FSG) Federal Supply Group
53 Hardware and Abrasives
(FSC) Federal Supply Classification
5305 Screws
(INC) Item Name Code
18257
(FIIG) Federal Item Identification Guide
A003B0
Date
10/31/1987 (38 years ago)

2a thread class, 1.063 inches minimum thread length, 1.438 inches minimum and 1.500 inches maximum fastener length, hexagon head style, right-hand thread direction

Specs & Compatibility

Thread Class

2a

Thread Direction

right-hand

Thread Length

1.063 inches minimum

Fastener Length

1.438 inches minimum and 1.500 inches maximum

Head Style

hexagon

Head Height

0.195 inches minimum and 0.211 inches maximum

Width Between Flats

0.489 inches minimum and 0.500 inches maximum

Shank Unthreaded Hole Diameter

0.074 inches minimum and 0.082 inches maximum first hole

Nominal Thread Diameter

0.312 inches

Thread Quantity Per Inch

18

Minimum Tensile Strength

70000 pounds per square inch

Hardness Rating

235.0 brinell b maximum overall

Minimum Yield Strength

40000 pounds per square inch

Distance From Head Largest Bearing Surface To Shank Hole Center

1.385 inches minimum and 1.403 inches maximum first hole

Surface Finish

63.0 microinches threads

Material

steel comp 410 or steel comp 416 or steel comp 430 overall

Material Document And Classification

66 fed std all material responses overall

Surface Treatment

passivate overall

Surface Treatment Document And Classification

qq-p-35 fed spec single treatment response overall

Thread Series Designator

unc

Nondefinitive Spec/Std Data

2 type and 10p style

Regulatory Compliance

Precious Metals Indicator
A

Item does not contain precious metal.

Criticality Code
X

The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Hazardous Metals Indicator
N

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

Pseudo Item Name Code

0018257

Related Hardware Products

Part Number Description
MS51109-36 Hexagon Head Cap Screw

Frequently Asked Questions

What is the FSCG of the NSN 5305-01-266-8370?
The FSCG of the NSN 5305-01-266-8370 is 5305
Does the NSN 5305-01-266-8370 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-01-266-8370 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 5305-01-266-8370 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-01-266-8370 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 5305-01-266-8370 was assigned to the Federal Catalog?
It was assigned 38 years ago, on Sat, Oct 31, 1987