NSI Industries JRM133 - 1/4-20 x 5 Round Head Combination Machine Screw Steel Zinc
NSI Industries

JRM133

Alternate Item Number: 81116

UPC: 639720811162

Documents & Media
Specification Sheet

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Minimum Qty: 100

Multiplier: 100

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Overview

The NSI Industries JRM133 is a 1/4-20 x 5 inch round head combination machine screw engineered for secure industrial fastening. Constructed from high-strength steel with a zinc coating, this fastener delivers corrosion resistance and durability in demanding environments. The combination head accommodates both slotted and Phillips screwdrivers, eliminating tool compatibility issues during installation. With a UNSPSC code of 31161504, this screw is ideal for machinery assembly, equipment mounting, and general construction applications where reliable fastening is critical. The zinc plating provides enhanced protection against rust and wear, extending service life in outdoor or high-moisture settings. Manufactured in the USA, the JRM133 meets stringent industrial quality standards for precision and consistency. Its 5-inch length ensures robust engagement in thick materials, while the steel construction guarantees structural integrity under load. Suitable for applications requiring a balance of strength, corrosion resistance, and installation flexibility.
  • 1/4-20 thread size with 5-inch length for deep material engagement
  • Combination head fits slotted and Phillips screwdrivers
  • Zinc-coated steel construction resists corrosion and wear
  • Manufactured in the USA to industrial quality standards
  • UNSPSC code 31161504 for machinery and equipment fastening

Specifications

Head Type
Round
Length
5 IN
Material
Zinc
Material
Steel with Zinc Coating
Material
steel (zinc coated)
Material Quality
Zinc
Size
1/4-20
Size
1/4-20 X 5"
Size
1/4-20 x 5 inch
Type
Machine Screw
Package Dimensions (L x W x H)
4.5 IN x 4.5 IN x 7.25 IN
Package Dimensions (L x W x H)
11.43 cm x 11.43 cm x 18.415 cm
Package Weight (Imperial)
5.950 L
Package Weight (Metric)
2.699 kg
5/16-18 x 5 Round Head Slot MS Steel Zinc

RM147SLT

5/16-18 x 5 Round Head Slot MS Steel Zinc
Machine screw for use with a pre-tapped hole or with a nut. It is made of steel with a zinc plated finish and has a truss head with a square/slotted combo drive. The screw size is 10-24 x 4 in., with a 4.000 in. length and 2A external threads.

24765

Machine screw for use with a pre-tapped hole or with a nut. It is made of steel with a zinc plated finish and has a truss head with a square/slotted combo drive. The screw size is 10-24 x 4 in., with a 4.000 in. length and 2A external threads.
25 PKG SCREWS & NYLON WASHER

SCREWM6-25

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Oval Head Spanner Machine Screw, Stainless Steel material, #6-32 Size, 1 in. length, 50 per pack

SPT300

Oval Head Spanner Machine Screw, Stainless Steel material, #6-32 Size, 1 in. length, 50 per pack
Machine Screw, #6-32 Size, 370 piece(s), Steel material, 1 per pack, including a(n) #6-32 Flat Head Slotted Drive Machine Screw and (30) 3 in. Machine Screw and (75) 1-1/4 in. Machine Screw, 50 x 1-1/2 in. Machine Screw and (40) 2 in. Machine Screw and (100) 3/4 in. Machine Screw, (75) 1 in. Machine Screw

FMK632

Machine Screw, #6-32 Size, 370 piece(s), Steel material, 1 per pack, including a(n) #6-32 Flat Head Slotted Drive Machine Screw and (30) 3 in. Machine Screw and (75) 1-1/4 in. Machine Screw, 50 x 1-1/2 in. Machine Screw and (40) 2 in. Machine Screw and (100) 3/4 in. Machine Screw, (75) 1 in. Machine Screw
Oval Head Spanner Machine Screw, Stainless Steel material, #6-32 Size, 1-1/2 in. length, 50 per pack

SPT400

Oval Head Spanner Machine Screw, Stainless Steel material, #6-32 Size, 1-1/2 in. length, 50 per pack
Machine Screw Kit, 1/4-20 in. Size, 124 piece(s), Steel material, Round head, Phillips/Slotted drive type, Zinc finish, Plastic box material, including a(n) (35) 1/2 in. Machine Screw, (30) 3/4 in. Machine Screw, (20) 1 in. Machine Screw, (15) 1-1/4 in. Machine Screw, (12) 1-1/2 in. Machine Screw,(12) 2 in. Machine Screw

RMK1420

Machine Screw Kit, 1/4-20 in. Size, 124 piece(s), Steel material, Round head, Phillips/Slotted drive type, Zinc finish, Plastic box material, including a(n) (35) 1/2 in. Machine Screw, (30) 3/4 in. Machine Screw, (20) 1 in. Machine Screw, (15) 1-1/4 in. Machine Screw, (12) 1-1/2 in. Machine Screw,(12) 2 in. Machine Screw
Machine Screw Kit, #10-32 Size, 245 piece(s), Steel material, Round head, Phillips/Slotted drive type, Zinc finish, Plastic box material, including a(n) (75) 1/2 in. Machine Screw, (50) 3/4 in. Machine Screw, (40) 1 in. Machine Screw, (30) 1-1/4 in. Machine Screw, (25) 1-1/2 in. Machine Screw,(25) 2 in. Machine Screw

RMK1032

Machine Screw Kit, #10-32 Size, 245 piece(s), Steel material, Round head, Phillips/Slotted drive type, Zinc finish, Plastic box material, including a(n) (75) 1/2 in. Machine Screw, (50) 3/4 in. Machine Screw, (40) 1 in. Machine Screw, (30) 1-1/4 in. Machine Screw, (25) 1-1/2 in. Machine Screw,(25) 2 in. Machine Screw

Frequently Asked Questions

What types of materials are these machine screws made from?

These Round Head Machine Screws are available in Steel, Stainless Steel, Brass, and Silicone Bronze materials.

Which screw series are covered by this specification sheet?

This specification sheet applies to RM, JRM (excluding JRMB and JRMN), SRM, and RSB series of Round Head Machine Screws.

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