| PROCESS CODE | SPECIFICATION | DESCRIPTION | REMARKS |
||
| ANODIZING | PA | BPS 4001 / MIL-A-8625 TY I, TY IB | CHROMIC ACID | ✔ | |
| PD1 | BPS 4387 / MIL-A-8625 TY III | HARD ANODIZING | ✔ | ||
| PD2 | BPS 4387 | HARD ANODIZING (PTFE, TFE COATING) | ✔ | ||
| PD3 | BPS 4387 / MIL-A-8625 TY III | HARD ANODIZING (PTFE, TFE SEALED) | ✔ | ||
| PM | BPS 4555* / MIL-A-8625 TY IIB | SULFURIC ACID * See note | ✔ | * SEE NOTE 1 BELOW, APPLIES TO BPS 4555 ONLY | |
| BLACK OXIDE | PF | BPS 4084 | BLACK OXIDE | ✔ | |
| CAD PLATING | PB | BPS4006 / AMS-QQ-P-416 TY I,II, III | CADMIUM PLATE | ✔ | |
| CHEM FILM | QB1 | BPS 4182 / MIL-DTL-5541 TY I | CL 1A | ✔ | |
| QB2 | BPS 4182 / MIL-DTL-5541 TY I | CL 3 | ✔ | ||
| CHEM MILL | QE2 | BPS 4389 / MIL-C-81769 / AMS-C-81769 | LOW ALLOY STEEL | ✔ | |
| QE3 | BPS 4389 / MIL-C-81769 / AMS-C-81769 | STAINLESS & HIGH ALLOY | ✔ | ||
| QE5 | BPS 4389 / MIL-C-81769 / AMS-C-81769 | TITANIUM | ✔ | ||
| QE6 | BPS 4389 / MIL-C-81769 / AMS-C-81769 | FORGINGS | ✔ | ||
| EPOLISH | BPS 4501 | ✔ | |||
| ETCH | QE7 | BPS 4389 | PRE PENETRANT ETCH AL. CASTING | ✔ | |
| CLEANING | PS | BPS 4138 | CHEMICAL | ✔ | |
| SN4 | BPS 4462 | CLEAN & DESCALE.OF TI MAT'L | ✔ | ||
| DFL | QI | BPS 4310 / MIL-L-23398 / MIL-PRF-46010 | ✔ | ||
| PASS | QJ1 | BPS 4007 / AMS 2700 ALL TY 1-4 | PROCEDURE I | ✔ | |
| QJ2 | BPS 4007 / AMS 2700 ALL TY 1-4 | PROCEDURE II | ✔ | ||
| PHOSPHATE | QC | BPS 4384 | STEEL | ✔ | |
| MIL-P-16232 / MIL-DTL-16232 | Type M only | ✔ | |||
| NDE | IA | BPS 4075 / ASTM E 1444 | MAG PARTICLE | ✔ | |
| IB3 | BPS 4089 / ASTM E 1417 | FPI (WATER WASHABLE) CSTGS; INCLUDES IB1. | ✔ | ||
| IB4 | BPS 4089 | FPI (POST-EMULSIFIED) CSTGS/FORG.; INCLUDES IB2. | ✔ | ||
| IF1 | BPS 4309 / ASTM E 1742 | RADIOGRAPHIC | ✔ | ||
| IF2 | BPS 4309 / ASTM E 1742 | RADIOGRAPHIC | ✔ | ||
| WELDING | NJ1 | BPS 4470 | WELDING(IN PROCESS CASTINGS) AL 356/A356/357 ALLOYS | ✔ | |
| for BPS 4555 but lists BPS 4001 chromic acid anodize as an alternate, MIL can process the part per BPS 4001 and BPS 4001 only. | |||||
| THE PROCESSES COVERED BY THE FOLLOWING LISTED SPECIFICATIONS REQUIRE BELL APPROVAL : | |||||
| 4001 | 4357 Sect IV | 4458 | 4531 | 4595 | |
| 4003 | 4359 | 4460 | 4541 | 4596 | |
| 4006 | 4364 | 4462 | 4542 | 4597 | |
| 4007 | 4366 | 4463 | 4543 | 4599 | |
| 4012 | 4383 | 4465 | 4544 | 4600 | |
| 4017 | 4384 | 4467 | 4546 | 4601 | |
| 4022 | 4387 | 4469 | 4548 | ||
| 4075 | 4389 | 4470 | 4549 | ||
| 4083 | 4400 | 4478 | 4551 | ||
| 4084 | 4401 | 4487 | 4552 | ||
| 4089 | 4402 | 4488 | 4553 | ||
| 4092 | 4403 | 4490 | 4554 | ||
| 4098 | 4404 | 4491 | 4555 | ||
| 4110 | 4408 | 4492 | 4556 | ||
| 4113 | 4409 | 4495 | 4558 | ||
| 4138 | 4419 | 4496 | 4563 | ||
| 4139 | 4420 | 4501 | 4570 | ||
| 4140 | 4424 | 4503 | 4574 | ||
| 4162 | 4425 | 4508 | 4578 | ||
| 4163 | 4431 | 4509 | 4579 | ||
| 4182 | 4432 | 4510 | 4580 | ||
| 4207 | 4436 | 4511 | 4581 | ||
| 4212 | 4437 | 4512 | 4582 | ||
| 4302 | 4439 | 4513 | 4583 | ||
| 4304 | 4440 | 4514 | 4584 | ||
| 4305 | 4445 | 4517 | 4586 | ||
| 4309 | 4446 | 4518 | 4587 | ||
| 4310 | 4448 | 4520 | 4588 | ||
| 4312 | 4449 | 4522 | 4589 | ||
| 4328 | 4453 | 4523 | 4590 | ||
| 4339 | 4454 | 4525 | 4591 | ||
| 4351 | 4455 | 4528 | 4592 | ||
| 4352 | 4456 | 4529 | 4594 | ||
