M-4-18-20

M41820 Machine Screw

Price Quote Get an up to date pricing and availability quote for this product. Order online or over the phone.

Part Number:
Quantity Requested:
Your Email:
Full Name:
Contact Phone:
Company:

Quality Commitment

Serving our customers with quality and safety first.

  •   AS9120 Certified
  •   Audited supply chain
  •   ITAR Registered
  •   DDTC Registered
  •   HAZMAT Certified
  •   Customer service objectives
  •   Every product 100% inspected
AS9120 Certified by SAI Global

Datasheet. M-4-18-20 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

Thread Length
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.

0.250in. ⁓1/4"

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

0.138in. (UTS #6)

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

32

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

steel

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?

32

What is the thread length?

0.250 inches

What is the thread direction?

Right-hand

What is the thread class?

2a

What is the NSN for M-4-18-20?

5305-01-459-4739

How is this classified for shipping?

Schedule B number: 7318152000
Bolts and bolts and their nuts or washers exported in the same shipment

What's the federal classification of M-4-18-20?

FSC 5305 ⁓ Screws

NSN 5305-01-459-4739 SCREW,MACHINE

unc thread series 32 thread quantity per inch 0.250" thread length right-hand 2a thread class

NIIN
014594739
NIIN Date
10/02/98
Schedule B
7318152000 
Name Code
06657
FIIG
A500D0
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
No precious metals
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

Other Part Numbers Parts with same form, fit, and function by other manufacturers

1. M-5-2-7 Cage 07309

Major End Users Countries and entities

  • - Australia 
  • - New Zealand 
  • - Republic of Korea 

Availability for M-4-18-20 A member of our team will provide you with a price and availability quote

Request a Quote »

Similar by Design Other screws with similar characteristics

Nothing similar to this part number was found in our inventory

M-4-18-20 / 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.