Jack Screw On OneMonroe

OneMonroe's Lyn-Tron brand Jack Screws are precision-engineered fasteners designed to provide secure and adjustable spacing in electronic and mechanical assemblies. Manufactured in the USA, these high-quality components are ideal for mounting D-subminiature connectors and other panel hardware where precise alignment and spacing are critical.

Constructed from durable materials such as stainless steel and zinc-plated steel, Lyn-Tron Jack Screws are built to withstand vibration, torque, and frequent adjustments. Each jack screw offers smooth threading and reliable performance in demanding industrial, aerospace, and electronic applications.

Whether you're assembling PCBs, enclosures, or custom equipment, trust Lyn-Tron’s USA-made Jack Screws for consistent fit, finish, and function across every project.

Item #	Shape	Material	OD	ID Code	Length	Part Description
ST9419-34	N/A Hex	N/A Steel	N/A 3/16"	N/A 4-40	N/A 3/4"	N/A (10 EA/Pk) Hex Jack 4-40 Screw Only, Zinc-Plated Steel, 3/4" Length Male Thread
ST9439-34	N/A Hex	N/A Steel	N/A 3/16"	N/A 4-40	N/A 3/4"	N/A (10 EA/Pk) (with Washers and Nut) Male-Female Thread Hex Standoff (Jack Screw), Zinc Plated Steel, 4-40 Screw Size, 3/4" Length Male Thread
STXBLK-00016-34	N/A Hex	N/A Steel	N/A 3/16"	N/A 4-40	N/A 1/8"	N/A (25 EA/Pk) (with Washers and Nut) Male-Female Thread Hex Standoff (Jack Screw), Zinc Plated Steel, 4-40 Screw Size, 1/8" Length Male Thread
STXBLK-00018-34	N/A Hex	N/A Steel	N/A 3/16"	N/A 4-40	N/A 7/8"	N/A (10 EA/Pk) (with Washers and Nut) Male-Female Thread Hex Standoff (Jack Screw), Zinc Plated Steel, 4-40 Screw Size, 7/8" Length Male Thread
STXBLK-00019-34	N/A Hex	N/A Steel	N/A 3/16"	N/A 4-40	N/A 1"	N/A (10 EA/Pk) (with Washers and Nut) Male-Female Thread Hex Standoff (Jack Screw), Zinc Plated Steel, 4-40 Screw Size, 1" Length Male Thread
STXNSL-00004-34	N/A Hex	N/A Steel	N/A 3/16"	N/A 4-40	N/A 1/8"	N/A (25 EA/Pk) Hex Jack 4-40 Screw Only, Zinc-Plated Steel, 1/8" Length Male Thread
STXNSL-00005-34	N/A Hex	N/A Steel	N/A 3/16"	N/A 4-40	N/A 1"	N/A (10 EA/Pk) Hex Jack 4-40 Screw Only, Zinc-Plated Steel, 1" Length Male Thread
STXNSL-00007-34	N/A Hex	N/A Steel	N/A 3/16"	N/A 4-40	N/A 7/8"	N/A (10 EA/Pk) Hex Jack 4-40 Screw Only, Zinc-Plated Steel, 7/8" Length Male Thread

Item #

Shape

Material

OD

ID Code

Length

Part Description

Quantity

ST9419-34

N/A Hex

N/A Steel

N/A 3/16"

N/A 4-40

N/A 3/4"

N/A (10 EA/Pk) Hex Jack 4-40 Screw Only, Zinc-Plated Steel, 3/4" Length Male Thread

ST9439-34

N/A Hex

N/A Steel

N/A 3/16"

N/A 4-40

N/A 3/4"

N/A (10 EA/Pk) (with Washers and Nut) Male-Female Thread Hex Standoff (Jack Screw), Zinc Plated Steel, 4-40 Screw Size, 3/4" Length Male Thread

STXBLK-00016-34

N/A Hex

N/A Steel

N/A 3/16"

N/A 4-40

N/A 1/8"

N/A (25 EA/Pk) (with Washers and Nut) Male-Female Thread Hex Standoff (Jack Screw), Zinc Plated Steel, 4-40 Screw Size, 1/8" Length Male Thread

STXBLK-00018-34

N/A Hex

N/A Steel

N/A 3/16"

N/A 4-40

N/A 7/8"

N/A (10 EA/Pk) (with Washers and Nut) Male-Female Thread Hex Standoff (Jack Screw), Zinc Plated Steel, 4-40 Screw Size, 7/8" Length Male Thread

STXBLK-00019-34

N/A Hex

N/A Steel

N/A 3/16"

N/A 4-40

N/A 1"

N/A (10 EA/Pk) (with Washers and Nut) Male-Female Thread Hex Standoff (Jack Screw), Zinc Plated Steel, 4-40 Screw Size, 1" Length Male Thread

STXNSL-00004-34

N/A Hex

N/A Steel

N/A 3/16"

N/A 4-40

N/A 1/8"

N/A (25 EA/Pk) Hex Jack 4-40 Screw Only, Zinc-Plated Steel, 1/8" Length Male Thread

STXNSL-00005-34

N/A Hex

N/A Steel

N/A 3/16"

N/A 4-40

N/A 1"

N/A (10 EA/Pk) Hex Jack 4-40 Screw Only, Zinc-Plated Steel, 1" Length Male Thread

STXNSL-00007-34

N/A Hex

N/A Steel

N/A 3/16"

N/A 4-40

N/A 7/8"

N/A (10 EA/Pk) Hex Jack 4-40 Screw Only, Zinc-Plated Steel, 7/8" Length Male Thread