Segment Reporting (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Fastener Segment
Revenues	$ 7,605,981	$ 7,307,006	$ 15,940,101	$ 14,416,661
Segment Depreciation	216,207	204,001	428,121	412,948
Segment Operating profit	882,371	953,663	1,932,807	1,517,829
Property, Plant and Equipment, Additions	269,281	395,976	406,046	631,277
Accounts Receivable, Net	5,055,675	4,629,002	5,055,675	4,629,002
Segment Reporting Information, Inventory, Net	4,430,149	4,063,062	4,430,149	4,063,062
Segment Net property, plant and equipment	6,131,318	5,695,327	6,131,318	5,695,327
Assembly Equipment Segment
Revenues	823,220	827,098	1,689,418	1,531,811
Segment Depreciation	14,125	15,877	28,250	31,754
Segment Operating profit	231,433	201,022	432,765	312,777
Property, Plant and Equipment, Additions	68,203	30,015	68,203	61,265
Accounts Receivable, Net	365,217	417,472	365,217	417,472
Segment Reporting Information, Inventory, Net	797,329	832,675	797,329	832,675
Segment Net property, plant and equipment	1,137,267	1,128,005	1,137,267	1,128,005
Unallocated Corporate Segment
Segment Depreciation	17,958	18,420	35,915	36,840
Property, Plant and Equipment, Additions	39,157	0	39,157	37,729
Segment Net property, plant and equipment	648,060	680,948	648,060	680,948
Segment Selling and administrative expenses	(493,705)	(480,326)	(1,054,591)	(993,144)
Segment Gain from disposal of property and equipment	27,500	187,073	57,500	189,063
Segment Interest income	7,833	11,089	16,685	23,018
Other Assets	$ 7,453,905	$ 7,164,764	$ 7,453,905	$ 7,164,764