Product Description
Armstrong Adjusting Screw Jam Nut (⅜"-16NC) – Part No. 913521-100
Genuine Armstrong replacement adjusting screw jam nut, Armstrong part number 913521-100, for Series 4030, 4270 pumps. Shown as item 13 on the Series 4270 drawing (parts list 6042.124) – highlighted in the pictures above.
* Please confirm before ordering: this number is printed this way in Armstrong’s Series 4270 parts list but looks inconsistent. Call us with your pump serial number to confirm.
- Armstrong lists 3 nuts for 4 capscrews.
Specification: ⅜"-16NC
Fits these Armstrong pumps
- Series 4030 (base mounted end suction) – pump sizes 4 × 3 × 6, 3 × 1½ × 8, 3 × 2 × 8, 3 × 2½ × 8, 4 × 3 × 8, 5 × 4 × 8W, 6 × 4 × 8W, 6 × 5 × 8, 8 × 8 × 8, 2 × 1 × 10, 2 × 1½ × 10, 3 × 1½ × 10, 3 × 2 × 10, 3 × 2½ × 10, 4 × 3 × 10, 5 × 4 × 10, 6 × 4 × 10, 6 × 5 × 10, 8 × 6 × 10W, 4 × 3 × 11½, 5 × 4 × 11½, 6 × 5 × 11½, 8 × 6 × 11½, 3 × 1½ × 13, 3 × 2 × 13, 4 × 3 × 13, 4 × 3 × 13L, 6 × 4 × 13, 6 × 4 × 13H, 6 × 5 × 13, 6 × 5 × 13H, 8 × 6 × 13
- Designation: 'M', 'MHD', 'MXHD'
- Motor frames: 254T, 256T, 284TS, 286TS, 324TS, 326TS, 364TS, 365TS, 213T, 215T, 404TS, 405TS, 284T, 286T, 324T, 326T
- Bearings: Regreaseable bearings, Oil lubricated bearings
- Drawing item: 113
- Series 4270 (close coupled) – pump sizes 1¼ × 1, 1½ × 1¼, 2 × 1½
- Drawing item: 13
Other parts for this pump
Rebuilding a Series 4270 1¼ × 1? These parts are often replaced at the same time:
Not sure this is the right part?
Use our Armstrong Pump Parts Finder: choose Series 4270, your pump size and motor to see every part on the drawing. Or send us your pump’s nameplate details – call (416) 236-2338 or email sales@bramhambros.com. Bramham Bros is an authorized Armstrong dealer.
