1/8" x 27
Grease Fittings
1/8″ x 27 PTF (also referred to as NPT, ANPT, American Pipe, Briggs) have a 60° thread form and a 1:16 taper. The full definition is described in SAE J476. There is provision in SAE J534 for extra truncation on the crests of the threads.
The reference 1/8″ does not refer to the diameter of the thread. It is an old reference to the pipe size onto which the thread would be used. The nominal diameter of these threads is roughly 0.4” (approx. 10mm).
The self forming version of this thread has a 90° thread form and a 10° diametral taper.

1/8" x 27 - Standard Fittings
Below are our most common 1/8″ x 27 fittings. To view the product please click the product code.
Kingfisher Code | Kingfisher Code | Description |
White Trivalent. RoHS, REACH Compliant | Yellow Chromate. Limited Availability | |
1/8" x 27 PTF Straight | ||
1/8" x 27 PTF 45° | ||
1/8" x 27 PTF 65° | ||
1/8" x 27 PTF 90° | ||
1/8" x 27 1.1/4 Long | ||
1/8" x 27 Self Form Straight | ||
1/8" x 27 Self Form 45° | ||
1/8" x 27 Self Form 90° |
Some grease fittings are also available in 303 stainless, 316 stainless & Monel®
Please note: White Trivalent is preferred for RoHS and REACH compliance.
1/8″ x 27 PTF SAE Special Extra Short Grease Fitting
221610
Categories Mild Steel, 1/8 x 27, Hydraulic Grease Nipple, Grease Nipples, American
1/8″ x 27 PTF Special Short 30˚ Grease Fitting
231611
Categories 1/8 x 27, Grease Nipples, Hydraulic Grease Nipple, American, Mild Steel
1/8” x 27 PTF Special Short 45° Grease Fitting
231688
Categories 1/8 x 27, Grease Nipples, Hydraulic Grease Nipple, American, Mild Steel
1/8″ x 27 PTF Special Short 65˚ Grease Fitting
231612
Categories 1/8 x 27, Hydraulic Grease Nipple, Grease Nipples, American, Mild Steel
1/8″ x 27 PTF Special Short 90° Grease Fitting
231613
Categories American, Mild Steel, 1/8 x 27, Grease Nipples, Hydraulic Grease Nipple
1/8” x 27 PTF Straight Grease Fitting 1.25″ Long
221607
Categories American, Mild Steel, 1/8 x 27, Grease Nipples, Hydraulic Grease Nipple, Product Long
1/8″ x 27 PTF Special Extra Short Straight Grease Fitting
226510
Categories Mild Steel, 1/8 x 27, Grease Nipples, Hydraulic Grease Nipple, American
1/8” x 27 Thread Forming Straight Grease Fitting
225570
Categories Hydraulic Grease Nipple, Mild Steel, Self-forming, 1/8 x 27, Grease Nipples
1/8″ x 27 Self Forming Straight Grease Fitting
225578
Categories Hydraulic Grease Nipple, Grease Nipples, Mild Steel, Self-forming, 1/8 x 27
1/8” x 27 Thread Forming 45˚ Grease Fitting
237745
Categories Mild Steel, Self-forming, 1/8 x 27, Grease Nipples, Hydraulic Grease Nipple
1/8” x 27 Thread Forming 90˚ Grease Fitting
237790
Categories Hydraulic Grease Nipple, Mild Steel, Self-forming, 1/8 x 27, Grease Nipples
1/8″ x 27 PTF Straight Grease Fitting 303 Stainless Steel (A2)
808082
Categories American, 303 Stainless, 1/8 x 27, Grease Nipples, Hydraulic Grease Nipple
1/8″ x 27 PTF 45˚ Grease Fitting 303 Stainless Steel
818245
Categories 303 Stainless, 1/8 x 27, Grease Nipples, Hydraulic Grease Nipple, American
1/8″ x 27 PTF 65˚ Grease Fitting 303 Stainless Steel
818267
Categories Grease Nipples, Hydraulic Grease Nipple, American, 303 Stainless, 1/8 x 27
1/8″ x 27 PTF 90˚ Grease Fitting 303 Stainless Steel
818290
Categories 1/8 x 27, Grease Nipples, Hydraulic Grease Nipple, American, 303 Stainless
1/8 x 27 PTF Special Short Straight Grease Fitting
221620
Categories Hydraulic Grease Nipple, American, Mild Steel, Grease Nipples, 1/8 x 27
1/8” x 27 PTF Straight Grease Fitting 1.75″ Long
221669
Categories Hydraulic Grease Nipple, Product Long, American, Mild Steel, Grease Nipples, 1/8 x 27
1/8” x 27 PTF Special 2.55″ Long Grease Fitting
221684
Categories Hydraulic Grease Nipple, Product Long, Grease Nipples, American, Mild Steel, 1/8 x 27
1/8” x 27 PTF 1.75″ Long 90˚ Grease Fitting
231606
Categories Product Long, American, Mild Steel, 1/8 x 27, Hydraulic Grease Nipple, Grease Nipples
1/8″ x 27 PTF 65˚ Grease Fitting 1.25″ Long
231623
Categories 1/8 x 27, Hydraulic Grease Nipple, Product Long, Grease Nipples, American, Mild Steel
1/8” x 27 PTF 90˚ Long Grease Fitting 1.8″
23131690
Categories 1/8 x 27, Hydraulic Grease Nipple, Grease Nipples, Product Long, American, Mild Steel
1/8″ x 27 PTF 65˚ Grease Fitting 2.75″ Long
211649
Categories Hydraulic Grease Nipple, Product Long, American, Mild Steel, Grease Nipples, 1/8 x 27
1/8″ x 27 PTF Leakproof Straight Double Ball Grease Fitting
221634
Categories High Pressure/Leakproof, 1/8 x 27, Grease Nipples, American, Mild Steel
1/8″ x 27 PTF Straight Grease Fitting 316 Stainless Steel (A4)
316PTF
Categories Hydraulic Grease Nipple, American, 316 Stainless, 1/8 x 27, Grease Nipples
1/8″ x 27 PTF 316 Stainless Steel 45° Grease Fitting
316P1845
Categories Hydraulic Grease Nipple, American, 316 Stainless, 1/8 x 27, Grease Nipples
1/8″ x 27 PTF 316 Stainless Steel 90° Grease Fitting
316P1890
Categories Hydraulic Grease Nipple, American, 316 Stainless, 1/8 x 27, Grease Nipples
1/8″ x 27 NPS Straight Female Grease Fitting
221618
Categories Hydraulic Grease Nipple, American, Mild Steel, Grease Nipples, 1/8 x 27
1/8” x 27 PTF – Breather Vent – Zinc Plated – White
915698W
Categories 1/8 x 27, American, Mild Steel, Vents/Breathers, Grease Nipples
1/8″ x 27 PTF American Button Head Grease Fitting
331184W
Categories 1/8 x 27, Grease Nipples, Button Head Grease Fitting, American, Mild Steel
1/8 x 27 PTF 303 Stainless Steel American Button Head
82331184
Categories 303 Stainless, 1/8 x 27, Grease Nipples, Button Head Grease Fitting, American
Looking for something else? View our full range of grease fittings and other fittings on our dedicated product page here.