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Taper Thread Grease Fittings
Taper thread grease fittings are the most popular grease zerk. They are used on cars, trucks and many types of industrial machinery. It is recommended that SAE-LT taper threads (Society of Automotive Engineers Lubrication Threads) be installed into straight holes with a 1/4''-28 UNF-3B straight-threaded hole. The included angle of the thread for a 1/4"-28 taper thread grease zerk is 60º. Taper thread grease fittings include a dirt-excluding ball check. Taper thread grease fittings are also referred to as taper thread zerk fittings, taper thread grease zerks, or a taper thread zerk.
Several sizes available in both Stainless Steel and Monel.
| SAE Number | Grease Fitting Description | FIG |
A |
B |
X |
Alemite
# |
Lincoln
# |
H-100 |
1/4"-28 SAE STRAIGHT |
1 |
35/64" |
3/16" |
5/16" |
1641-B |
5010 |
H-100-RLA |
1/4"-28
SAE LONG THREAD |
5 |
11/16" |
23/64" |
5/16" |
1652-B |
5013 |
H-100-LMA |
1/4"-28
SAE MEDIUM LONG |
5 |
31/32" |
5/8" |
5/16" |
1680-B |
5014 |
H-100-LA |
1/4"-28
SAE LONG |
5 |
1-1/8" |
25/32" |
5/16" |
1698-B |
5017 |
H-100-LLA |
1/4"-28
STRAIGHT VERY LONG |
5 |
1-5/8" |
1" |
5/16" |
3014-B |
N/A |
H-145 |
1/4"-28
SAE 45 DEGREE |
2 |
27/32" |
7/32" |
3/8" |
1637-B1 |
5210 |
H-165 |
1/4"-28
SAE 65 DEGREE |
3 |
3/4" |
7/32" |
3/8" |
N/A |
5311 |
H-165-RL |
1/4"-28
65° LONG THREAD |
3 |
13/16" |
19/64" |
3/8" |
3010-B1 |
700396 |
H-190-A |
1/4"-28
SAE 90 DEGREE |
4 |
3/4" |
7/32" |
3/8" |
1911-B1 |
5410 |
