1/4" x 28
Grease Fittings
¼” x 28 threads include ¼” x 28 SAE-LT, Special Taper (Thread Forming) and ¼” x 28 UNF.
SAE-LT stands for Society of Automotive Engineers – Lubrication Thread.
Grease fittings or zerks with ¼” x 28 SAE-LT threads have a UNF thread form but with a 1:16 taper to ensure an optimal seal in a ¼” x 28 UNF tapped hole. Reference SAE J534.
The tapered thread is preferred as it negates the need for additional sealant and is less likely to become loose under vibration.
The self-forming version has a 90° thread form and a 10° diametral taper. Both these threads are unique to grease fittings.
UNF has a 60° thread form and is parallel.
These grease fittings are designed and manufactured from high quality materials at our site in Leeds.
1/4" x 28 - Standard Grease Fittings
Below are our most common 1/4″ x 28 fittings. To view the product please click the product code.
Kingfisher Code | Kingfisher Code | Description |
White Trivalent. RoHS, REACH Compliant. | Yellow Chromate. Limited Availability. | |
1/4 x 28 SAE-LT Straight | ||
1/4 x 28 SAE-LT 45° | ||
1/4 x 28 SAE-LT 65° | ||
1/4 x 28 SAE-LT 90° | ||
1/4 x 28 SAE-LT 11/16 Long | ||
1/4 x 28 SAE-LT 15/16 Long | ||
1/4 x 28 SAE-LT 1.1/8 Long | ||
1/4 x 28 Self Form Straight | ||
1/4 x 28 Self Form 45° | ||
1/4 x 28 Self Form 45° Short | ||
1/4 x 28 Self Form 90° | ||
1/4 x 28 UNF Straight Short |
Some fittings are also available in 303 stainless, 316 stainless & Monel®.
Please note: White Trivalent is preferred for RoHS and REACH compliance.
Looking for something else? Head back to our product homepage to view our full range of grease fittings here.
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Use the bar below to search the whole site, or if you still can’t find what you need, just give us a call! +44 (0)113 209 8989
Not found what you're looking for?
Use the bar below to search the whole site, or if you still can’t find what you need, just give us a call!
