Furniture Screws Versus Cams

Tension Loading

		Screws - Assembled at the Laboratory		Cams - Assembled at the Laboratory		Cams - Assembled at the factory
		Specimen	Max. Load (lbs)	Specimen	Max. Load (lbs)	Specimen	Max. Load (lbs)
		S01	547	C01	364	C11	233
		S02	506	C02	289	C12	281
		S03	567	C03	278	C13	320
		S04	474	C04	322	C14	321
		S05	485	C05	294	C15	349
		Average	516	Average	309	Average	301

Lateral Loading

			Screws - Assembled at the Laboratory		Cams - Assembled at the Laboratory		Cams - Assembled at the Factory
			Specimen	Max. Load (lbs)	Specimen	Max. Load (lbs)	Specimen	Max. Load (lbs)
			S06	20.4	C06	12.1	C16	22.8
			S07 1,2,3	29.5	C07	15.3	C17	15.8
			S08	21.5	C08	14.0	C18	27.9
			S09	22.0	C09	11.8	C19	19.3
			S10	29.5	C10	14.2	C20	16.7
			Average	24.6	Average	13.5	Average	20.5

Note: All specimens assembled at the laboratory were assembled with a Makita 6093D drill using the same clutch position. pic1 pic2