8CKKW8, HOLT*, AXD XtTS I 1 ' 



fur* are flat, . i>latea, having Mm 



"ctofthewa*i give a smooth 



ut t<* turn u|Min, and it U u*-i 



the urfewi of th pieeea to be connected are rough, or when 



the bolt paase* i hole larger than iUelf, aa alumn H, 



: f the waalier ia a Ir than tin- 



iicroHN the angles, and iu thickneaa about 



| of the diameter It 



12. Dm M view* shown 



hexagonal nut in l| iaehea in diameter. The boh 



paMii through a bole 1] * If. AH t)>< <ltmanaioaji are to becaJcu- 



lated frmil thr rulrn \\lncli II.IM just >.. 



Imi and elevation of tin- 



nut ami U>lt \\ ith cotinteraunk head shown in fig. 11, to the 

 nsiona giren. 



tew M. -Draw, fall sizo. tho elevation of the hook bolt 

 with hexagonal nut shown in t'.-. 18 to the dhnenajona giv 

 how aUo a plan. 



Draw, to a * 

 l-olt for a marine abaft coupling \\* n in ::_. i; All the parU aro 



> a section of the mouth of a snmll ^ 

 ii..\\ ii!^ how the cover uattached ; draw t 



deaoribed on pagv . the central 



boa* ul 14 crewel >n uhichin 



forged the collar C. The npper part of the tud ia aerew. 

 cnrrii-s 1 and an hexagonal ntr. 



: and Riiard are of brasa. The stud ami nut aro of 

 wrou -hiuii. 



irn fn-'ly ti|on a 



'-It. tli.'j.- is i! .v t\ , .1 MTV Kiiiull clearmnoe rm n tic- 



threads of t .1 tlu-s-.f th. I-!T iranoeia shown 



wci^jgerat* .-re A ia a portion of a Ult within 



If is streU-Ii 



i SCTPWIH! up, thf upper surfacea of th- 

 threacb of the nut will preaa on thf and. 



