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PERMCO 1-5/8 X 12 STRAIGHT TAP

Description & Features

Designed for use with Permco gear pumps and motors, the Permco 1-5/8 x 12 Straight Tap is a shaft end component used in hydraulic drive and power take-off configurations. The straight tap style provides a direct, inline connection suited to applications where a standard shaft interface is required.

With a 1-5/8-inch diameter and 12-inch length, this tap is built to Permco's specifications for compatibility with their gear pump product lines. As a genuine Permco part, it is intended as a direct replacement or assembly component within existing Permco hydraulic systems.

SKU: 1-5/8-ST./TAP

Supplier Part Number (MPN): 1-5/8-ST./TAP

Specifications

Brand Permco Inc.	Brand Permco	Pack Size 1.00	UOM EA	Supplier Part Number 1-5/8-ST./TAP	Product Weight 0.50 lbs

Product Questions & Answers (3)

Question by: Terry B on Jun 6, 2025, 5:58 PM

i keep seeing “1-5/8 x 12 straight tap” on the shop order, what exactly is that on this Permco part?

Answer by: Customer Support on Jun 8, 2025, 6:43 AM

Straight tap refers to a straight threaded tap, and the 1-5/8 x 12 callout is the thread size, 1-5/8 inch diameter with 12 threads per inch. In plain terms, it is a Permco tap made to cut that specific straight thread.

Question by: Dean K on Aug 15, 2025, 8:28 AM

So, this is just a tap, right? Not the whole shebang?

Answer by: Customer Support on Aug 17, 2025, 6:54 AM

Correct. This is just the PERMCO 1-5/8 X 12 STRAIGHT TAP.

Question by: Stan L on Jun 25, 2025, 7:43 PM

what exactly is a "straight tap" on a pump shaft, and is that what I need if I'm bolting up a PTO-driven setup?

Answer by: Customer Support on Jun 27, 2025, 6:25 AM

A straight tap shaft means the shaft end is machined with a straight (non-tapered) profile and has a tapped hole for a retaining bolt or coupling fastener, rather than using a keyed or splined connection on its own. For PTO-driven setups, straight tap configurations are pretty common when the mating coupler is bored straight and secured with a through-bolt or cap screw at the shaft end. The 1-5/8 inch diameter on this Permco shaft puts it in a range used frequently on mid-to-larger displacement gear pumps. Whether it fits your specific PTO coupler comes down to your coupler's bore size matching that 1-5/8 inch dimension and the bolt pattern or tap size lining up with your fastener.