Awọn ifibọ alailowaya / Awọn bọtini titiipa Awọn ọna ti o jẹ agbara ati resistance si iyipo ati fifi sori ẹrọ lẹhin fifi sori ẹrọ. Awọn bọtini titiipa ni iduroṣinṣin fun wọn nipa ṣiṣe pẹlu awọn okun ohun elo obi. Awọn ifibọ wọnyi wa ni inch ati awọn titobi meta, Pẹlu Apẹrẹ Irin alagbara, Irin ti o ni iduroṣinṣin ti o tọ sii awọn okun ti inu-ogbontari. Fifi sori ẹrọ Awọn ibeere Ko si awọn irinṣẹ irinṣẹ pataki-ṣe deede awọn taps ati awọn lu to fun imuse iho. Awọn bọtini mu-pejọ ti a pejọ ṣe agbekalẹ ijinle ti o tọ ati rii daju iduroṣinṣin iduroṣinṣin lodi si iyipo ti a ko ṣọwọn.
Oun elo: Ni irin erogba – C1215 tabi deede ; Ninu irin alagbara, irin – 303 tabi deede
Awọn bọtini – 302 Awọn ero tabi deede
Pari: Irin alagbara – Zinc poosphate ; Irin ti ko njepata – Palọ
Ifarada: ±.010 inch tabi ± .25 mm ayafi ti o ba sọ bibẹẹkọ.

| Nọmba Apakan | Awọn iwọn | |||||
| Idiwọn “Akoonu” | Titẹ-ara “Koko” | Okun inu Ø | Ita okun Ø | Ile-iwe adehun Irọ-oorun Inch² (mm²) | L1 inch (mm) | L4 inch (mm) | 
| Kneca0256J | 2-56″ Unjc-3B | 8-32″ Aisan-3A | 0,0157 (10,1) | 0,12 (3,05) | 0,088 (2,24) | |
| Knecal0256 | 0,0157 (10,1) | 0,088 (2,24) | ||||
| Kneca0440J | 4-40″ Unjc-3B | 10-32″ Ko dara-2A | 0,0302(19,5) | 0,17 (4,32) | 0,125 (3,18) | |
| Knecal0440J | 0,0302 (19,5) | 0,125(3,18) | ||||
| Knec0635 | 6-32″ Unjc-3B | 12-28″ Ko dara-2A | 0,0329 (21,2) | 0,17 (4,32) | 0,125 (3,18) | |
| Knectc063 | 0,0329(21,2) | 0,125(3,18) | ||||
| Kraca083 | 8-32″ Unjc-3B | 1/4-28″ Ko dara-2A | 0,0669 (43,2) | 0,22 (5,59) | 0,175(4,45) | |
| Knecal083 | 0,0669 (43,2) | 0,175 (4,45) | ||||
| Nọmba Apakan | Fifi sori ẹrọ awọn nọmba | Awọn iwọn yiyọ | |||||
| ti tunṣe mojuto-Ø * inch | C'sek-øsk inch | Fifi sori ẹrọ okun | Ọwọ fifi sori ẹrọ apa ọtun-Bẹẹkọ. | Gbẹ nkan | |||
| Okun | L2 min. inch (mm) | Inch (mm) | Ijinle Inch (mm) | ||||
| Kneca0256J | .134+0.003 -0,001 | .166 + .001 – .000 | 8-32 Alaimọ-zb | 0,140 (3,56) | Tkc02 | 0,113 (2,87) | 1/16 (1,59) | 
| Knecal0256 | |||||||
| Kneca0440J | .161+0.003 -0,001 | .194 + .001 -.000 | 10-32 Alaini-2 | 0, 160 (4,06) | Tknc04 | 0,136 (3,45) | 3/32 (2,38) | 
| Knecal0440J | |||||||
| Knec0635 | .187 +0,003 -0,001 | .220+ .001 -.000 | 12-28 Alaini-2 | 0,160 (4,06) | TKnc06 | 0,159 (4,04) | 3/32 (2,38) | 
| Knectc063 | |||||||
| Kraca083 | .228 +0,003 -0,001 | .225+ .001 -.000 | 1/4-28 Alaini-2 | 0,210 (5,33) | Tkc08 | 0,199 (5,05) | 1 /8 (3,18) | 
| Knecal083 | |||||||
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