Main specifications
Material
Glass-fibre reinforced polyamide based (PA) technopolymer, black colour, matte finish.
VB.639/130: glass-fibre reinforced polypropylene based (PP) technopolymer, black colour, matte finish.
Standard executions
- VB.639-A: black-oxide steel boss, plain blind hole.
- VB.639-B: brass boss, threaded blind hole.
- VB.639-FP: brass boss, threaded pass-through hole.
- VB.639-p: zinc-plated steel threaded stud with chamfered flat end as in UNI 947 : ISO 4753 (see Technical data).
- VB.639-SST: AISI 303 stainless steel boss, threaded blind hole.
- VB.639-FP-SST: AISI 303 stainless steel, threaded pass-through hole.
General information
Applications
This knob has been designed for heavy duty work where the use of a hammer for a firmer clamping action is required.
