5-16-18X1-4

51618X14 Machine Screw

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Datasheet. 5-16-18X1-4 specification

Thread Class
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.

2a

Thread Direction
The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.

RIGHT-Hand

Fastener Length
The dimension,measured along a line parallel to the longitudinal axis,from the largest bearing surface of the fastener head to the extreme opposite end,or as specifically designated for other type fasteners.

0.125in. ⁓1/8"

Nominal Thread Diameter
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.

0.312in. ⁓5/16"

Thread Quantity Per Inch
The number of threads on the item per linear inch measured on a line parallel to the thread axis.

18

Screw Material
The chemical compound or mechanical mixture properties of which the screw is fabricated.

copper alloy

Thread Series Designator
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.

unc

Answers.

What class is the thread series?

Unc

What is the thread quantity per inch?

18

What is the thread direction?

Right-hand

What is the thread class?

2a

What is the NSN for 5-16-18X1-4?

5305-01-021-5099

How is this classified for shipping?

Schedule B number: 7415338550
Other copper screws (not for wood) bolts and nuts

What's the federal classification of 5-16-18X1-4?

FSC 5305 ⁓ Screws

NSN 5305-01-021-5099 SCREW,MACHINE

unc thread series 18 thread quantity per inch right-hand 2a thread class

NIIN
010215099
NIIN Date
05/17/76
Schedule B
7415338550 
Name Code
06657
FIIG
A500D0
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
Metal content unknown
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

Major End Users Countries and entities

  • - National Institutes of Health 

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5-16-18X1-4 / Screw,machineWhat is the formal definition of this item?

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). no. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. a locking feature may be incorporated in the design of the head or threads. excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. see also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.