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1/4"-28 Straight Thread Grease Fittings
Straight thread grease fittings are for cars, trucks and a variety of industrial machines. 1/4"-28 straight thread grease fittings are commonly referred to as straight thread grease zerks, or 1/4"-28 UNF-2A grease fittings. The straight thread grease fittings shown below feature a ball check which prevents dirt from entering the grease fitting.
| SAE Number | Grease Fitting Description | FIG |
A |
B |
X |
Alemite
# |
Lincoln
# |
| H-100-28 | 1/4"-28 UNF-2A STRAIGHT | 1 |
33/64" |
5/32" |
9/32" |
1792-B |
5527 |
| H-145-CU | 1/4"-28 UNF-2A 45 DEGREE | 2 |
41/64" |
1/8" |
3/8" |
1770-B1 |
N/A |
| H-100-28-C | 1/4"-28 UNF-2A STRAIGHT | 1 |
7/16" |
1/8" |
5/16" |
369609 |
N/A |
| H-100-28-LA | 1/4"-28 UNF-2A STRAIGHT | 1 |
17/32" |
3/16" |
17/32" |
333330 |
N/A |
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