Heavy Pressure
Steel noses are case hardened for wear resistance without brittleness.
Bodies are 12L14 steel with a black oxide finish.
The nylon locking element holds the plunger body securely in place without the need for lock nuts or other devices. We recommend a 90 degree countersink 1/32″ larger than the major diameter of the mating thread to prevent damaging the element.
All part numbers that end with a “P” do NOT have a locking element.
To prevent possible spring damage, use of a Northwestern Wrench is recommended when installing from plunger end.
Part # | Projection | Nose Diameter | Body Length | Thread Sizes | End Pressure Start (lbs.) | End Pressure Full (lbs.) | Materials | Pressures | Locking Element | Buy | hf:tax:projection | hf:tax:nose_diameter | hf:tax:body_length | hf:tax:thread | hf:tax:end_pressure_lbs_start | hf:tax:end_pressure_lbs_full | hf:tax:material | hf:tax:pressure | hf:tax:locking_element |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
33001P | 0.093 | 0.07 | 5/8 | 8-32 | 2.7 | 7.3 | Steel | Heavy | No | | 0-093 | 0-07 | 5-8 | 8-32 | 2-7 | 7-3 | steel | heavy | no |
33003P | 0.125 | 0.093 | 3/4 | 10-32 | 2.9 | 11.1 | Steel | Heavy | No | | 0-125 | 0-093 | 3-4 | 10-32 | 2-9 | 11-1 | steel | heavy | no |
33005P | 0.187 | 0.119 | 1" | 1/4-20 | 3 | 13 | Steel | Heavy | No | | 0-187 | 0-119 | 1 | 1-4-20 | 3 | 13 | steel | heavy | no |
33005AP | 0.187 | 0.119 | 1" | 1/4-28 | 3 | 13 | Steel | Heavy | No | | 0-187 | 0-119 | 1 | 1-4-28 | 3 | 13 | steel | heavy | no |
33007P | 0.187 | 0.135 | 1" | 5/16-18 | 3 | 15 | Steel | Heavy | No | | 0-187 | 0-135 | 1 | 5-16-18 | 3 | 15 | steel | heavy | no |
33009P | 0.187 | 0.186 | 1-1/8 | 3/8-16 | 5.5 | 14.5 | Steel | Heavy | No | | 0-187 | 0-186 | 1-1-8 | 3-8-16 | 5-5 | 14-5 | steel | heavy | no |
33011P | 0.25 | 0.248 | 1-1/4 | 1/2-13 | 6.6 | 17.4 | Steel | Heavy | No | | 0-25 | 0-248 | 1-1-4 | 1-2-13 | 6-6 | 17-4 | steel | heavy | no |
33013P | 0.312 | 0.31 | 1-1/2 | 5/8-11 | 10.5 | 25.5 | Steel | Heavy | No | | 0-312 | 0-31 | 1-1-2 | 5-8-11 | 10-5 | 25-5 | steel | heavy | no |
33001 | 0.093 | 0.07 | 5/8 | 8-32 | 2.7 | 7.3 | Steel | Heavy | Yes | | 0-093 | 0-07 | 5-8 | 8-32 | 2-7 | 7-3 | steel | heavy | yes |
33003 | 0.125 | 0.093 | 3/4 | 10-32 | 2.9 | 11.1 | Steel | Heavy | Yes | | 0-125 | 0-093 | 3-4 | 10-32 | 2-9 | 11-1 | steel | heavy | yes |
33005 | 0.187 | 0.119 | 1" | 1/4-20 | 3 | 13 | Steel | Heavy | Yes | | 0-187 | 0-119 | 1 | 1-4-20 | 3 | 13 | steel | heavy | yes |
33005A | 0.187 | 0.119 | 1" | 1/4-28 | 3 | 13 | Steel | Heavy | Yes | | 0-187 | 0-119 | 1 | 1-4-28 | 3 | 13 | steel | heavy | yes |
33007 | 0.187 | 0.135 | 1" | 5/16-18 | 3 | 15 | Steel | Heavy | Yes | | 0-187 | 0-135 | 1 | 5-16-18 | 3 | 15 | steel | heavy | yes |
33009 | 0.187 | 0.186 | 1-1/8 | 3/8-16 | 5.5 | 14.5 | Steel | Heavy | Yes | | 0-187 | 0-186 | 1-1-8 | 3-8-16 | 5-5 | 14-5 | steel | heavy | yes |
33011 | 0.25 | 0.248 | 1-1/4 | 1/2-13 | 6.6 | 17.4 | Steel | Heavy | Yes | | 0-25 | 0-248 | 1-1-4 | 1-2-13 | 6-6 | 17-4 | steel | heavy | yes |
33013 | 0.312 | 0.31 | 1-1/2 | 5/8-11 | 10.5 | 25.5 | Steel | Heavy | Yes | | 0-312 | 0-31 | 1-1-2 | 5-8-11 | 10-5 | 25-5 | steel | heavy | yes |
33021P | 0.093 | 0.07 | 5/8 | 8-32 | 2.7 | 7.3 | Steel | Heavy | No | | 0-093 | 0-07 | 5-8 | 8-32 | 2-7 | 7-3 | steel | heavy | no |
33023P | 0.125 | 0.093 | 3/4 | 10-32 | 2.9 | 11.1 | Steel | Heavy | No | | 0-125 | 0-093 | 3-4 | 10-32 | 2-9 | 11-1 | steel | heavy | no |
33025P | 0.187 | 0.119 | 1" | 1/4-20 | 3 | 13 | Steel | Heavy | No | | 0-187 | 0-119 | 1 | 1-4-20 | 3 | 13 | steel | heavy | no |
33025AP | 0.187 | 0.119 | 1" | 1/4-28 | 3 | 13 | Steel | Heavy | No | | 0-187 | 0-119 | 1 | 1-4-28 | 3 | 13 | steel | heavy | no |
33027P | 0.187 | 0.135 | 1" | 5/16-18 | 3 | 15 | Steel | Heavy | No | | 0-187 | 0-135 | 1 | 5-16-18 | 3 | 15 | steel | heavy | no |
33029P | 0.187 | 0.186 | 1-1/8 | 3/8-16 | 5.5 | 14.5 | Steel | Heavy | No | | 0-187 | 0-186 | 1-1-8 | 3-8-16 | 5-5 | 14-5 | steel | heavy | no |
33031P | 0.25 | 0.248 | 1-1/4 | 1/2-13 | 6.6 | 17.4 | Steel | Heavy | No | | 0-25 | 0-248 | 1-1-4 | 1-2-13 | 6-6 | 17-4 | steel | heavy | no |
33033P | 0.5 | 0.499 | 2-13/32 | 5/8-11 | 16 | 68 | Steel | Heavy | No | | 0-5 | 0-499 | 2-13-32 | 5-8-11 | 16 | 68 | steel | heavy | no |
33021 | 0.093 | 0.07 | 5/8 | 8-32 | 2.7 | 7.3 | Steel | Heavy | Yes | | 0-093 | 0-07 | 5-8 | 8-32 | 2-7 | 7-3 | steel | heavy | yes |
33023 | 0.125 | 0.093 | 3/4 | 10-32 | 2.9 | 11.1 | Steel | Heavy | Yes | | 0-125 | 0-093 | 3-4 | 10-32 | 2-9 | 11-1 | steel | heavy | yes |
33025 | 0.187 | 0.119 | 1" | 1/4-20 | 3 | 13 | Steel | Heavy | Yes | | 0-187 | 0-119 | 1 | 1-4-20 | 3 | 13 | steel | heavy | yes |
33025A | 0.187 | 0.119 | 1" | 1/4-28 | 3 | 13 | Steel | Heavy | Yes | | 0-187 | 0-119 | 1 | 1-4-28 | 3 | 13 | steel | heavy | yes |
33027 | 0.187 | 0.135 | 1" | 5/16-18 | 3 | 15 | Steel | Heavy | Yes | | 0-187 | 0-135 | 1 | 5-16-18 | 3 | 15 | steel | heavy | yes |
33029 | 0.187 | 0.186 | 1-1/8 | 3/8-16 | 5.5 | 14.5 | Steel | Heavy | Yes | | 0-187 | 0-186 | 1-1-8 | 3-8-16 | 5-5 | 14-5 | steel | heavy | yes |
33031 | 0.25 | 0.248 | 1-1/4 | 1/2-13 | 6.6 | 17.4 | Steel | Heavy | Yes | | 0-25 | 0-248 | 1-1-4 | 1-2-13 | 6-6 | 17-4 | steel | heavy | yes |
33033 | 0.5 | 0.499 | 2-13/32 | 5/8-11 | 16 | 68 | Steel | Heavy | Yes | | 0-5 | 0-499 | 2-13-32 | 5-8-11 | 16 | 68 | steel | heavy | yes |
33101P | 0.062 | 0.046 | 17/32 | 6-32 | 1.5 | 4.5 | Steel | Heavy | No | | 0-062 | 0-046 | 17-32 | 6-32 | 1-5 | 4-5 | steel | heavy | no |
33102P | 0.062 | 0.046 | 3/8 | 6-32 | 1 | 1.6 | Steel | Heavy | No | | 0-062 | 0-046 | 3-8 | 6-32 | 1 | 1-6 | steel | heavy | no |
33103P | 0.093 | 0.07 | 5/8 | 8-32 | 2.7 | 7.3 | Steel | Heavy | No | | 0-093 | 0-07 | 5-8 | 8-32 | 2-7 | 7-3 | steel | heavy | no |
33105P | 0.125 | 0.093 | 3/4 | 10-32 | 2.9 | 11.1 | Steel | Heavy | No | | 0-125 | 0-093 | 3-4 | 10-32 | 2-9 | 11-1 | steel | heavy | no |
33107P | 0.187 | 0.119 | 1" | 1/4-20 | 3 | 13 | Steel | Heavy | No | | 0-187 | 0-119 | 1 | 1-4-20 | 3 | 13 | steel | heavy | no |
33108P | 0.187 | 0.119 | 1" | 1/4-28 | 3 | 13 | Steel | Heavy | No | | 0-187 | 0-119 | 1 | 1-4-28 | 3 | 13 | steel | heavy | no |
33109P | 0.125 | 0.119 | 3/4 | 1/4-20 | 2 | 9 | Steel | Heavy | No | | 0-125 | 0-119 | 3-4 | 1-4-20 | 2 | 9 | steel | heavy | no |
33111P | 0.187 | 0.135 | 1" | 5/16-18 | 3 | 15 | Steel | Heavy | No | | 0-187 | 0-135 | 1 | 5-16-18 | 3 | 15 | steel | heavy | no |
33113P | 0.187 | 0.186 | 1-1/8 | 3/8-16 | 5.5 | 14.5 | Steel | Heavy | No | | 0-187 | 0-186 | 1-1-8 | 3-8-16 | 5-5 | 14-5 | steel | heavy | no |
33115P | 0.25 | 0.248 | 1-1/4 | 1/2-13 | 6.6 | 17.4 | Steel | Heavy | No | | 0-25 | 0-248 | 1-1-4 | 1-2-13 | 6-6 | 17-4 | steel | heavy | no |
33117P | 0.312 | 0.31 | 1-1/2 | 5/8-11 | 10.5 | 25.5 | Steel | Heavy | No | | 0-312 | 0-31 | 1-1-2 | 5-8-11 | 10-5 | 25-5 | steel | heavy | no |
33119P | 0.312 | 0.374 | 1-3/4 | 3/4-10 | 6.7 | 37.3 | Steel | Heavy | No | | 0-312 | 0-374 | 1-3-4 | 3-4-10 | 6-7 | 37-3 | steel | heavy | no |
33120P | 0.5 | 0.499 | 2-13/32 | 1"-8 | 16 | 68 | Steel | Heavy | No | | 0-5 | 0-499 | 2-13-32 | 1-8 | 16 | 68 | steel | heavy | no |
33101 | 0.062 | 0.046 | 17/32 | 6-32 | 1.5 | 4.5 | Steel | Heavy | Yes | | 0-062 | 0-046 | 17-32 | 6-32 | 1-5 | 4-5 | steel | heavy | yes |
33102 | 0.062 | 0.046 | 3/8 | 6-32 | 1 | 1.6 | Steel | Heavy | Yes | | 0-062 | 0-046 | 3-8 | 6-32 | 1 | 1-6 | steel | heavy | yes |
33103 | 0.093 | 0.07 | 5/8 | 8-32 | 2.7 | 7.3 | Steel | Heavy | Yes | | 0-093 | 0-07 | 5-8 | 8-32 | 2-7 | 7-3 | steel | heavy | yes |
33105 | 0.125 | 0.093 | 3/4 | 10-32 | 2.9 | 11.1 | Steel | Heavy | Yes | | 0-125 | 0-093 | 3-4 | 10-32 | 2-9 | 11-1 | steel | heavy | yes |
33107 | 0.187 | 0.119 | 1" | 1/4-20 | 3 | 13 | Steel | Heavy | Yes | | 0-187 | 0-119 | 1 | 1-4-20 | 3 | 13 | steel | heavy | yes |
33108 | 0.187 | 0.119 | 1" | 1/4-28 | 3 | 13 | Steel | Heavy | Yes | | 0-187 | 0-119 | 1 | 1-4-28 | 3 | 13 | steel | heavy | yes |
33109 | 0.125 | 0.119 | 3/4 | 1/4-20 | 2 | 9 | Steel | Heavy | Yes | | 0-125 | 0-119 | 3-4 | 1-4-20 | 2 | 9 | steel | heavy | yes |
33111 | 0.187 | 0.135 | 1" | 5/16-18 | 3 | 15 | Steel | Heavy | Yes | | 0-187 | 0-135 | 1 | 5-16-18 | 3 | 15 | steel | heavy | yes |
33113 | 0.187 | 0.186 | 1-1/8 | 3/8-16 | 5.5 | 14.5 | Steel | Heavy | Yes | | 0-187 | 0-186 | 1-1-8 | 3-8-16 | 5-5 | 14-5 | steel | heavy | yes |
33115 | 0.25 | 0.248 | 1-1/4 | 1/2-13 | 6.6 | 17.4 | Steel | Heavy | Yes | | 0-25 | 0-248 | 1-1-4 | 1-2-13 | 6-6 | 17-4 | steel | heavy | yes |
33117 | 0.312 | 0.31 | 1-1/2 | 5/8-11 | 10.5 | 25.5 | Steel | Heavy | Yes | | 0-312 | 0-31 | 1-1-2 | 5-8-11 | 10-5 | 25-5 | steel | heavy | yes |
33119 | 0.312 | 0.374 | 1-3/4 | 3/4-10 | 6.7 | 37.3 | Steel | Heavy | Yes | | 0-312 | 0-374 | 1-3-4 | 3-4-10 | 6-7 | 37-3 | steel | heavy | yes |
33120 | 0.5 | 0.499 | 2-13/32 | 1"-8 | 16 | 68 | Steel | Heavy | Yes | | 0-5 | 0-499 | 2-13-32 | 1-8 | 16 | 68 | steel | heavy | yes |