74638M624

Nut,plain,extended Washer,double

This page provides complete and verified information for part number 74638M624, NSN 5310-01-059-0259

You’ll find detailed technical specifications, product attributes, condition classification, and real-time stock availability. All data is based on official records and meets industry standards for defense, aerospace, and industrial sourcing. Whether you’re performing a parts audit, validating compliance, or preparing a purchase order, this part listing supports accurate and efficient procurement.

74638M624
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5310 Nuts and Washers
National Stock Number
5310-01-059-0259
Item Name Code
04888
Assigment Date
04/06/1978 (48 years ago)

A nut internally threaded from one end, and completely enclosed on the opposite end. The outer periphery parallel to the threaded axis may be square, cylindrical, hexagonal, octagonal, dodecagonal or the like and taper to a cone or dome shape on the closed end. An integral feature is incorporated for locking on the threads of a mating memeber. Excludes:nut (1), stamped.

3b thread class, right-hand thread direction, 0.350 inches maximum overall height, 0.649 inches maximum washer outside diameter, double hexagon nut style

Characteristics

Below are the official specifications and performance details for this part, including technical data, material composition, and compliance information.

Thread Class
3b
Thread Direction
right-hand
Washer Outside Diameter
0.649 inches maximum
Overall Height
0.350 inches maximum
Nut Style
double hexagon
Washer Thickness
0.065 inches maximum
Width Across Flats
0.430 inches minimum and 0.439 inches maximum
Temp Rating
450.0 fahrenheit maximum
Thread Series
unjf
Thread Quantity Per Inch
24
Hardness Rating
44.0 rockwell c maximum
Nominal Thread Size
0.375 inches
Special Features
slotted and molybenum disulfide dry film lubricant after plating
Material
steel comp 8740 or steel overall
Material Document And Classification
ams 6485 assn std 2nd material response or ams 6487 assn std 2nd material response overall
Surface Treatment
cadmium overall
Surface Treatment Document And Classification
qq-p-416,type 2,class 2 fed spec single treatment response overall

Classification Data

Detailed NSN information including identification codes, classification data, and key indicators used for cataloging, logistics, and supply management.

Type of Item Identification
K - Full descriptive - reference item identification
Demilitarization
A - 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.
Criticality
X - The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Federal Item Identification Guide
A021A0
Precious Metals Indicator
U - Precious metal content is unknown
Pseudo Item Name Code
0004888
Hazardous Material Indicator
N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
Schedule B Code
7318160000

Freight Information

Comprehensive freight classifications, shipping codes, and handling specifications for domestic and international transport compliance.

Major Organizational Entity
KZ
National Motor Freight Classification Item Number
093486
National Motor Freight Classification Sub-Item Number
Z
Uniform Freight Classification Item Number
48950
National Motor Freight Class Rating
W - Rating variable
Water Commodity
573 - Bolts or nuts (iron or steel),(less than 35 feet)
Type of Cargo
Z - No special type of cargo code applicable
Special Hand
9 - Other or no special handling required (sh)
Air Dimension
A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.
Air Commodity
BZ -
National Motor Freight Description
bolts,nuts or screws, noi (sub 3)

FAQs

Get insights on installation procedures, operating conditions, care instructions, industry regulations, and common issues. FAQs below provide key information for 74638M624

What is the FSCG of the NSN 5310-01-059-0259?
The FSCG of the NSN 5310-01-059-0259 is 5310
Does the NSN 5310-01-059-0259 have a Schedule B code assigned?
Yes, the Schedule B code is 7318160000
Does NSN 5310-01-059-0259 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 5310-01-059-0259 contain precious materials?
Precious metal content is unknown
Does NSN 5310-01-059-0259 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 5310-01-059-0259 was assigned to the Federal Catalog?
It was assigned 48 years ago, on Thu, Apr 6, 1978

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