BOMCO Crown block parts list:
| Crown block frame | Retainer frame |
| Rail fence | Anti-collision mechanism |
| Retainer frame | Fastline sheave assembly |
| Retainer frame | Nut |
| Pin shaft | Washer |
| Auxiliary sheave assembly | Crown block crane boon |
| Base of lightning guard | Bolt |
| Main sheave assembly | Nut |
| Base of lightning guard | Nut |
| Retainer frame | Cotter pin |
| Wahser | Bolt |
| Screw | Bolt |
Bomco Crown block part no.
| AA225109-0200 | AA18006-00 |
| AA230201-09 | AA18006-01B |
| AA450101-07050001 | AA18006-02.00A |
| AA675101-0107 | AA18006-03.00B |
| AA675101-0109 | AA18006-04A |
| AA585104-0301 | AA18006-05A |
| AA450101-0701 | AA18004-08 |
| AA450105-0100 | AA19006-09.00 |
| AA450105-0200 | AA18008-04.00 |
| AA450105-03 | T205-004.00 |
| AA450105-0400 | AA18004-03.00 |
| AA450105-0500 | AA18004-07 |
| AA450105-0600 | AA18004-06.00 |
| AA450105-0700 | T57-4002 |
| AA450105-0800 | T516-1001 |
| AA450105-09 | AA18006-06.00 |
| AA450105-10 | GB5782-86 |
| AA450105-1100 | GB6170-86 |
| AA450105-1200 | GB6172-86 |
| AA450101-13 | GB91-86 |
| AA450105-1400 | GB5782-86 |
| AA450105-15 | GB5782-86 |
| AA450105-16 | GB93-87 |
| AA450105-1700 | GB847-85 |
| AA315102-0500 | AA18004-11 |
| AA450102-0200 | AA18007-01.00 |
| AA450102-0100 | 420402016240400000 |
| T203-001.10.00 | 420402026240200000 |
| AA450105-1900 | 420703020805003000 |
| GB/T5783-2000 | 420201031124120000 |
| GB93-87 | 420201031118035000 |
| GB/T31.1-1988 | 420503011181600000 |
| GB/T6170-2000 | 60402020351300000 |
| GB/T6172.1-2000 | 420201031124140000 |
| GB91-86 | 420201031112025000 |
| T206-002.00 | 420503011121600000 |
| GB/T31.1-1988 | T205-005.00 |
| GB/T31.1-1988 | T205-004.00 |
| GB/T31.1-1988 | AA170108-00SM |
| GB/T818-2000 | AA1701080100 |
| AA450105-18 | AA1701080200 |
| L357049/L357010D | AA1701080300 |
| L357049/L357010D | AA1701080400 |
| 8312 Φ60×Φ110×35 | AA1701080500 |
| 352216X2 Φ80×Φ140×80 | AA1701080600 |
| AA450105-00SM | AA1701080800 |
| AA31510200 | AA1701080900 |
| AA31510201 | AA1701081000 |
| AA3151020200 | AA1701081100 |
| AA3151020700 | AA17010812 |
| AA3151020400 | AA1701081300 |
| AA3151020500 | T211-01.00 |
| AA31510108 | AA15002－10.00 |
| AA4501010900 | T403— 003 |
| AA3151040400 | GB/T 6170 |
| T205-004.00 | GB/T 6172 |
| AA3151010300 | GB/T 31.1 |
| AA3151010700 | GB/T 5783 |
| AA3151010600 | GB/T 93 |
| T507-4002 | AA675101-00 |
| T516-1001 | AA450104-0100 |
| AA3151020600 | AA450104-0200 |
| AA3151011100 | AA450104-0300 |
| AA3151030100 | AA450104-0400 |
| AA450102-0100 | AA450104-0500 |
| AA450104-1000 | AA450104-06 |
| AA315102-0500 | AA450104-0700 |
| AA450102-0200 | AA450104-0800 |
| T203-001.00 | AA450104-0900 |
| T203-011.00 | T206-001.00 |