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Shoulder Screw NSN 5305-00-021-2578

Item Description

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.

NSN 5305-00-021-2578 NSN: 5305-00-021-2578

Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.330 inches
Fastener Length
6.260 inches
Head Style
Flat chamfer
Head Diameter
0.250 inches
Head Height
0.300 inches
Shoulder Diameter
0.187 inches first shoulder
Shoulder Length
5.570 inches first shoulder and 5.590 inches first shoulder
Internal Drive Style
Slot
Thread Diameter
0.138 inches
Thready Qty Per Inch (tpi)
32
Hardness Rating
23.0 rockwell c and 32.0 rockwell c
Shoulder Shape
Round all shoulders
Special Features
3rd shoulder 0.172 in. Diameter by 0.250 in. Lg, 4th shoulder 0.116 in. Diameter 0.029 in. Lg, 5th shoulder 0.187 in. Diameter by 0.041 in. Lg
Material
Steel comp 416
Material Specification
Qq-s-763 federal specification single material response
Surface Treatment
Passivate
Surface Treatment Specification
Mil-f-14072 military specification single treatment response
Thread Series Designator
Unc
FSC
5305 Screws
NIIN
000212578
NSN
5305000212578

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
106B5740P0001
Cage Code:
99971
Status:
A
MSDS:
Part Number:
106B5740P1
Cage Code:
99971
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 7318152000
  • NAICS: 332722
  • SITC: 69421
  • Description: Bolts and bolts and their nuts or washers exported in the same shipment
  • End Use (Code 12110):
    Iron and steel products, other

Q & A

Frequently asked questions for NSN 5305-00-021-2578
What are the manufacturers of nsn 5305000212578?
Does this nsn 5305000212578 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305000212578
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.
Does nsn 5305000212578 contain any precious metals?
Precious metal content is unknown.
Does nsn 5305000212578 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305000212578?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
22846
FIIG:
A003B0
App. Key:
SL
Cond. Code:
1
Status:
A

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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
  •   Quality Fast Service
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