NSN 5305-00-914-4171

Panel Assembly Fastener

About this product

Between 1.350 inches and 1.370 inches fastener length, flat chamfer head style, between 0.729 inches and 0.750 inches head diameter, head height: between 0.302 inches and 0.312 inches .

Manufacturer part number MS51975-28 for national stock number 5305009144171.


  • Product description

    Shoulder Screw NSN 5305-00-914-4171.

  • MPN or Model


  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    093486 - Bolts, Nuts Or Screws, NOI (sub 3)
  • Unit Weight (Est.)
    0.1 lb
  • Thread Class
  • Thread Direction
  • Thread Length
    Between 0.595 inches and 0.625 inches
  • Fastener Length
    Between 1.350 inches and 1.370 inches
  • Head Style
    Flat chamfer
  • Head Diameter
    Between 0.729 inches and 0.750 inches
  • Head Height
    Between 0.302 inches and 0.312 inches
  • Shoulder Diameter
    0.496 inches first shoulder and 0.498 inches first shoulder
  • Shoulder Length
    0.745 inches first shoulder and 0.755 inches first shoulder
  • Internal Drive Style
  • Thread Diameter
    0.375 inches
  • Width Across Flats
    0.250 inches
  • Thready Qty Per Inch (tpi)
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Hardness Rating
    32.0 rockwell c and 43.0 rockwell c
  • Shoulder Shape
    Round first shoulder
  • Material
    Steel comp 4037 or steel comp 4137 or steel comp 4140 or steel comp 8630 or steel comp 8740
  • Surface Treatment
    Cadmium and chromate
  • Surface Treatment Specification
    Qq-p-416 type 2 cl 3 federal specification single treatment response
  • Thread Series Designator
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Shoulder Screw

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in.) (1.5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is designed to be driven with either a wrench or an inserted driver or both in sizes below no. 10 (0.190 in.) (5 mm) nominal diameter. No. 10 (0.190 in.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. A locking feature may be incorporated in the design of the head or threads. For items which are both shouldered and have an externally relieved body, use screw, externally relieved body. For items with a no. 10 (0.190 in.) (5 mm) or larger thread diameter without an inserted driver head, use bolt, shoulder. Excludes bolt, internal wrenching and screw, cap, socket head.

Mechanic Bill explains Panel Assembly Fastener

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NSN 5305009144171

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
MS51975-28 National Aerospace Standards
2GL543 Oshkosh Corporation
MS16638-28 Military Standards
MS51975-28 Military Standards
2GL543 Oshkosh Defense, Llc
10388889 Nimikkeistokeskus Ncb Finland
709-5486661 ITEM 42 Naval Sea Systems Command
Stock Check
Availability for this item was last checked on 10/05/22. The quantities and conditions available at the time were:
  • NS: 67
  • NE: 1617