What the Fritsche 100-054-NUT Is
The Fritsche 100-054-NUT is a straight hose stud with a claw groove, used to terminate high-pressure lubrication hose ends in centralized grease systems. It forms one half of a reusable push-in connection when paired with a socket and a mating receiver fitting. The stud is sized for 4.1 x 8.75 mm high-pressure hose and provides a 6 mm tube end.
Fritsche is a trademark of its respective owner.
This is an aftermarket fitting, not manufactured, sponsored, or endorsed by Fritsche.
100-054-NUT designations are for cross-reference identification only.
Specifications
| Part number | 100-054-NUT |
| Type | Straight claw-groove hose stud |
| Hose compatibility | 4.1 x 8.75 mm high-pressure hose |
| Stud diameter | 6 mm |
| Overall length | 51 mm |
| Threaded length | 20 mm |
| Wrench size | 10 mm |
| Material | Steel, zinc-nickel plated |
| Working pressure | Up to 400 bar per listings; 350 bar comparable published limit; confirm assembly |
The 6 mm Name and the 4.1 mm Hose
The 6 mm designation refers to the stud diameter, not to the hose size. The hose that fits this stud has a bore of 4.1 mm and an outside diameter of 8.75 mm. Buyers often ask for a 6 mm hose, which is incorrect for this part. Always order by the actual hose dimensions to avoid mismatched components.
How the Claw-Groove Connection Works
Cut the hose squarely, then slide the threaded socket over the hose end. The socket uses a left-hand thread. Screw the claw-groove stud into the socket so the groove engages the hose internally and prevents pull-off. The socket then compresses and retains the hose around the stud. The finished stud-and-hose assembly seats into a push-in fitting on the system side, where release is done by pressing the release ring.
Straight, Elbow, and Coupling
The 100-054-NUT is the straight version for routing hose directly into a receiver port. The 100-053-NUT is the 90-degree elbow counterpart, measuring 28 mm in height and 37 mm in length with the same 10 mm wrench size, used where hose must turn immediately at the connection. A hose-to-hose coupling joins two hose lengths and provides no component mounting thread, so it cannot substitute for a stud or elbow when a port connection is required.
Related Parts
Pair this stud with high-pressure lubrication hose sized 4.1 x 8.75 mm. See the high-pressure lubrication hose options for compatible tubing.
The socket compresses the hose around the stud, and in rebuilt hose ends the gripping components should be replaced. Review compression sleeves for hose termination support.
This fitting serves centralized grease systems on mining, construction, and agricultural machinery. Learn how these circuits work in centralized lubrication systems or request pricing through the quotation form.
Frequently Asked Questions
What is this part?
The 100-054-NUT is a straight claw-groove hose stud for high-pressure grease lines. It terminates hose ends in centralized lubrication systems.
What hose fits this stud?
This stud fits 4.1 mm inside diameter by 8.75 mm outside diameter hose. Do not use hose sized only by the common 6 mm name.
What does the 6 mm mean?
The 6 mm size refers to the stud diameter, not the hose bore. The actual hose bore is 4.1 mm.
What is the working pressure?
Listings state up to 400 bar, while comparable published limits are 350 bar. Treat pressure as a matched assembly property and confirm the actual rating.
What does the claw groove do?
The groove engages the hose internally and prevents pull-off from the assembly. The socket then compresses the hose around the stud.
What thread does this stud have?
The 100-054-NUT itself is not an M10 or M14 threaded adapter. The system-side thread comes from the mating fitting, port, or socket, so identify the port by measurement, not by the stud number.
Straight or elbow version?
The straight 100-054-NUT routes hose directly into a receiver. The 100-053-NUT elbow turns the connection 90 degrees where space is tight.
What tools are needed?
A 10 mm wrench fits the stud hex during assembly. You also need a hose cutter for a square end.
Can I reuse this after disassembly?
Best practice is to replace hose-end components after a claw joint has been set. Reusing a previously compressed socket or stud can cause unreliable retention.
How do I order or get support?
IsoHiTech Lubrication Systems, founded in 2023, engineering since 2006, builds and supports every unit. Email inquiry@isohitech.com for specifications and a quotation.
Use the quotation form to start the request. A support engineer will confirm hose size and mating thread before quoting.
