Schedule of Segment Reporting Information (Details) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Net sales	$ 37,117,830		$ 34,223,772
Depreciation	1,093,062		993,951
Segment Profit	5,602,893		4,548,947
Selling and administrative expenses	(2,137,699)		(2,084,305)
Other income	160,835		118,099
Income before income taxes	3,626,029		2,582,741
Capital expenditures	3,474,858		1,187,746
Accounts receivable, net	5,510,770	[1]	4,577,932	[1]
Inventories, net	4,880,788		4,936,372
Property, plant and equipment, net	10,409,120		8,077,866
Other assets	7,356,668		8,319,333
Fastener
Net sales	33,616,593		30,999,163
Depreciation	957,078		859,045
Segment Profit	4,659,006		3,775,045
Capital expenditures	3,092,842		1,018,734
Accounts receivable, net	5,277,378		4,275,890
Inventories, net	4,076,781		4,175,702
Property, plant and equipment, net	8,727,541		6,363,280
Assembly Equipment
Net sales	3,501,237		3,224,609
Depreciation	59,195		59,199
Segment Profit	943,887		773,902
Capital expenditures	90,010		68,203
Accounts receivable, net	233,392		302,042
Inventories, net	804,007		760,670
Property, plant and equipment, net	1,137,133		1,106,318
Unallocated Corporate
Depreciation	76,789		75,707
Selling and administrative expenses	(2,137,699)		(2,084,305)
Other income	160,835		118,099
Capital expenditures	292,006		100,809
Property, plant and equipment, net	544,446		608,268
Other assets	$ 7,356,668		$ 8,319,333

[1] Net of allowance of $150,000.