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NSN 5305-01-503-8949

Panel Assembly Fastener

About this product

Screws to be subject to hydrogen embrittlement relief treatment.

Manufacturer part number 3176212-C-001 for national stock number 5305015038949.

Datasheet

  • Product description

    Shoulder Screw NSN 5305-01-503-8949.

  • MPN or Model

    3176212-C-001

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    096640 - Screws, Iron Or Steel
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.375 inches
  • Fastener Length
    0.750 inches
  • Head Style
    Flat chamfer
  • Head Diameter
    Between 0.357 inches and 0.375 inches
  • Head Height
    Between 0.177 inches and 0.188 inches
  • Shoulder Diameter
    0.246 inches first shoulder and 0.248 inches first shoulder
  • Shoulder Length
    0.375 inches first shoulder
  • Locking Feature
    Patch threads
  • Internal Drive Style
    Hexagon
  • Thread Diameter
    0.190 inches
  • Width Across Flats
    0.125 inches
  • Thready Qty Per Inch (tpi)
    24
  • Shoulder Shape
    Round first shoulder
  • Material
    Steel
  • Surface Treatment
    Zinc
  • Surface Treatment Specification
    Qq-z-325, ty ii, cl 3 federal specification single treatment response
  • Thread Series Designator
    Unc
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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 5305015038949

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
3176212-C-001 Naval Sea Systems Command
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