Secure Ordering: +1 (757) 528-8028
NationalStockNumber.info
NationalStockNumber.INFO

Worldwide distributor of NSN parts and consumables located in the USA.

Close Tolerance Bolt

Model / MPN: 20722-001 FIND 87 | NSN: 5306-01-370-7736
ITAR Registered seal

An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the shank diameter, but not below the major diameter for applicable class of fit, as shown in the screw thread standards, federal standard h28 and/or other nationally recognized standards. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160, 000 pounds per square inch (1100 megapascals) tensile strength, see bolt, shear. For items fabricated from material having less than 160, 000 pounds per square inch (1100 megapascals) tensile strength and not having a close tolerance, see bolt, machine.

Product Details
NATO Stock Number
5306-01-370-7736
Sold in multiples of
Q EA
DEMIL
NO
Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.266 inches
Fastener Length
Between 1.406 inches and 1.437 inches
Head Style
Hexagon
Head Height
Between 0.109 inches and 0.141 inches
Width Between Flats
Between 0.365 inches and 0.377 inches
Grip Diameter
Between 0.1889 inches and 0.1894 inches
Shank Unthreaded Hole Diameter
0.070 inches first hole and 0.080 inches first hole
Thread Diameter
0.190 inches
Grip Length
Between 0.984 inches and 1.016 inches
Thready Qty Per Inch (tpi)
32
Distance From Head Largest Bearing Surface To Shank Hole Center
1.266 inches first hole
Material
Steel comp 431
Material Specification
Mil-s-18732 military specification single material response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416 ty2 cl3 federal specification single treatment response
Thread Series Designator
Unf

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

Qty:
Email Address:
Phone Number:
Your name:
Company:
Privacy    Terms

Certified Quality Assurance  Quality check icon

  •   ISO 9001:2015 + AS9120B
  •   Counterfeit Parts Prevention
  •   100% Product Inspections
  •   7 Year Record Retention
  •   On Time Delivery
  •   HAZMAT Certified
  •   Worldwide Shipping
20722-001 FIND 87 Cross Reference
  • AN173C13