Sub-Total
Bolts
Bolts
A bolt has a shank, an unthreaded length directly under the head, making it stronger than a screw, which is threaded along its entire length. The threaded length on imperial bolts is twice the diameter, plus 1/4”; e.g. 3/8 UNF bolts have a threaded length of (2 x 3/8) + 1/4 = 1”, the remainder being the shank. The metric formula is twice the diameter, plus 6mm (bolts longer than 5”/125mm are different, but are not relevant here). Most Mini bolts have plain hexagonal (‘hex’) heads, but from the mid-1980s flanged hex head bolts were used in some applications.
| Hex Head UNC Bolts |  |
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| Part No | Nom. Thread Dia. | Thread Type | Overall Length | Remarks | Spanner Size |
| BH504131 | 1/4" | UNC | 1 5/8" | Zinc | 7/16 AF |
| BH505181 | 5/16" | UNC | 2 1/4" | Zinc | 1/2 AF |
| BH505201 | 5/16" | UNC | 2 1/2" | Zinc | 1/2 AF |
| BH506221 | 3/8" | UNC | 2 3/4" | Zinc | 9/16 AF |
| BH507131 | 7/16" | UNC | 1 5/8" | Zinc | 5/8 AF |
| BH507301 | 7/16" | UNC | 3 3/4" | Zinc | 5/8 AF |
| Hex Head UNF Bolts |  |
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| Part No | Nom. Thread Dia. | Thread Type | Overall Length | Remarks | Spanner Size |
| BH604081 | 1/4" | UNF | 1" | Zinc | 7/16 AF |
| BH604091 | 1/4" | UNF | 1 1/8" | Zinc | 7/16 AF |
| BH604111 | 1/4" | UNF | 1 3/8" | Zinc | 7/16 AF |
| BH604121 | 1/4" | UNF | 1 1/2" | Zinc | 7/16 AF |
| BH604131 | 1/4" | UNF | 1 5/8" | Zinc | 7/16 AF |
| BH604141 | 1/4" | UNF | 1 3/4" | Zinc | 7/16 AF |
| BH604151 | 1/4" | UNF | 1 7/8" | Zinc | 7/16 AF |
| HBZ420 | 1/4" | UNF | 2 1/2" | Zinc | 7/16 AF |
| BH605101 | 5/16" | UNF | 1 1/4" | Zinc | 1/2 AF |
| BH605111 | 5/16" | UNF | 1 3/8" | Zinc | 1/2 AF |
| BH605121 | 5/16" | UNF | 1 1/2" | Zinc | 1/2 AF |
| BH605131 | 5/16" | UNF | 1 5/8" | Zinc | 1/2 AF |
| BH605141 | 5/16" | UNF | 1 3/4" | Zinc | 1/2 AF |
| BH605151 | 5/16" | UNF | 1 7/8" | Zinc | 1/2 AF |
| BH605161 | 5/16" | UNF | 2" | Zinc | 1/2 AF |
| BH605201 | 5/16" | UNF | 2 1/2" | Zinc | 1/2 AF |
| BH605261 | 5/16" | UNF | 3 1/4" | Zinc | 1/2 AF |
| BH605301 | 5/16" | UNF | 3 3/4" | Zinc | 1/2 AF |
| BH605341 | 5/16" | UNF | 4 1/4" | Zinc | 1/2 AF |
| BH606131 | 3/8" | UNF | 1 5/8" | Zinc | 9/16 AF |
| BH606171 | 3/8" | UNF | 2 1/8" | Zinc | 9/16 AF |
| BH606181 | 3/8" | UNF | 2 1/4" | Zinc | 9/16 AF |
| BH606201 | 3/8" | UNF | 2 1/2" | Zinc | 9/16 AF |
| Hex Head UNF High Tensile Bolts | |
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| Part No | Nom. Thread Dia. | Thread Type | Overall Length | Remarks | Spanner Size |
| BT604161 | 1/4" | UNF | 2" | Zinc | 7/16 AF |
| BT605161 | 5/16" | UNF | 2" | Zinc | 1/2 AF |
| BT606281 | 3/8" | UNF | 3 1/2" | Zinc | 9/16 AF |
| BT606411 | 3/8" | UNF | 5 1/8" | Zinc | 9/16 AF |
| Hex Head Metric Fine Bolts | |
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| Part No | Nom. Thread Dia. | Thread Type | Overall Length | Remarks | Spanner Size |
| BH106091 | 6mm (M6) | Metric Fine | 45mm | Zinc | 10mm |
| BH106111 | 6mm (M6) | Metric Fine | 55mm | Zinc | 10mm |
| BH108081 | 8mm (M8) | Metric Fine | 40mm | Zinc | 13mm |
| BH108085 | 8mm (M8) | Metric Fine | 40mm | Black | 13mm |
| Flanged Head UNC Bolts |  |
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| Part No | Nom. Thread Dia. | Thread Type | Overall Length | Remarks | Spanner Size |
| DAM7755 | 5/16" | UNC | 1" | Zinc | 1/2 AF |
| DAM7754 | 5/16" | UNC | 1 1/8" | Zinc | 1/2 AF |
| DAM7756 | 5/16" | UNC | 1 1/8" | Patchlok | 1/2 AF |
| DAM7759 | 5/16" | UNC | 1 3/4" | Zinc | 1/2 AF |
| DAM7760 | 5/16" | UNC | 2 1/2" | Zinc | 1/2 AF |
| DAM7761 | 5/16" | UNC | 3 1/4" | Zinc | 1/2 AF |
| TAM1188 | 7/16" | UNC | 1 1/2" | Zinc | 5/8 AF |
| Flanged Head UNF Bolts |  |
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| Part No | Nom. Thread Dia. | Thread Type | Overall Length | Remarks | Spanner Size |
| TAM1174 | 1/4" | UNF | 1 1/2" | Zinc | 7/16 AF |
| DAM7753 | 5/16" | UNF | 7/8" | Zinc | 1/2 AF |
| TAM1178 | 5/16" | UNF | 1 1/4" | Zinc | 1/2 AF |
| DAM7758 | 5/16" | UNF | 1 3/4" | Zinc | 1/2 AF |
| TAM1180 | 5/16" | UNF | 1 7/8" | Zinc | 1/2 AF |
| Flanged Head Metric Fine Bolts | |
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| Part No | Nom. Thread Dia. | Thread Type | Overall Length | Remarks | Spanner Size |
| FB106067 | 6mm (M6) | Metric Fine | 30mm | Zinc | 10mm |
| FB106081 | 6mm (M6) | Metric Fine | 40mm | Zinc | 10mm |
| FB106095 | 6mm (M6) | Metric Fine | 45mm | Black | 10mm |
| FB108091 | 8mm (M8) | Metric Fine | 45mm | Zinc | 13mm |
| FB108241 | 8mm (M8) | Metric Fine | 120mm | Zinc | 13mm |
| FB110141P | 10mm (M10) | Metric Fine | 70mm | Pointed | 17mm |
