Skip to the beginning of the images gallery

PERMCO CAP SCREW/HEX 1/2-13X 2-3/4

Description & Features

A standard hex cap screw sized 1/2-13 x 2-3/4, the Permco Cap Screw/Hex 1/2-13x 2-3/4 is a fastener commonly used in the assembly and maintenance of Permco hydraulic pump and motor units. The 1/2-13 thread designation indicates a 1/2-inch nominal diameter with 13 threads per inch (UNC), and the 2-3/4-inch length suits typical housing and mounting configurations found in hydraulic power units.

Sourced directly from Permco, this cap screw is intended as a genuine replacement or service part, helping ensure proper fit and clamping integrity in original equipment assemblies.

SKU: W1-88

Supplier Part Number (MPN): W1-88

Specifications

Brand Permco Inc.	Brand Permco	Pack Size 1.00	UOM EA	Supplier Part Number W1-88	Product Weight 1.00 lbs

Product Questions & Answers (3)

Question by: Billy S on Mar 16, 2026, 2:29 PM

Is this the actual OEM screw for Permco pumps, or just something that fits?

Answer by: Customer Support on Mar 17, 2026, 5:00 PM

Genuine Permco part, sourced directly from them. The SKU W1-88 is their own part number, so you're getting the same fastener that goes in at the factory, not a generic substitute. For clamping integrity on a hydraulic pump or motor housing, that matters more than folks sometimes realize.

Question by: Roger G on Sep 8, 2025, 5:07 PM

got a permco pump apart on the bench. is this the right bolt for it, or is it some oddball size

Answer by: Customer Support on Sep 9, 2025, 9:10 PM

For Permco pump and motor assemblies that call for a standard hex cap screw in 1/2-13 UNC thread and a 2-3/4 inch length, this matches that spec. It is a genuine Permco service part, so the thread and length are meant to line up with original equipment hardware that uses that size.

Question by: Johnny A on Jan 17, 2026, 7:56 AM

Just want to make sure this is the right size bolt for my Permco pump. It's for the housing.

Answer by: Customer Support on Jan 18, 2026, 8:46 PM

This Permco cap screw is a direct replacement part, made to the original specifications for Permco hydraulic pumps and motors. The 1/2-13 x 2-3/4 size is suitable for typical housing and mounting configurations on those units.