DETAIL SPECIFICATION SHEET
BOLT – FLUID PASSAGE
INCH-POUND · AN775 Rev 15 · 28 March 2018 · Superseding AN775 Rev 14 w/Amendment 1, 12 June 2012 · AMSC N/A · FSC 4730
FIGURE 1. Bolt – fluid passage dimensions and configurations.
| Inches | mm |
|---|---|
| .001 | 0.03 |
| .002 | 0.05 |
| .015 | 0.38 |
| .025 | 0.64 |
| Inches | mm |
|---|---|
| .005 | 0.13 |
| .010 | 0.25 |
FIGURE 1. Bolt – fluid passage dimensions and configurations – Continued.
| Dash number | Tubing OD inches (mm) |
Thread T (Ref) SAE-AS8879 |
A Dia. +.000 -.004 (0.10) inches (mm) |
B ±.010 (0.25) inches (mm) |
C inches (mm) |
|---|---|---|---|---|---|
| -4 | .250 (6.35) | .4375-20UNJF-3A | .435 (11.05) | .781 (19.84) | .438 (11.13) |
| -5 | .313 (7.95) | .5000-20UNJF-3A | .498 (12.65) | .781 (19.84) | .438 (11.13) |
| -6 | .375 (9.53) | .5625-18UNJF-3A | .560 (14.22) | .875 (22.23) | .468 (11.89) |
| -8 | .500 (12.70) | .750-16UNJF-3A | .748 (19.00) | 1.094 (27.79) | .562 (14.27) |
| -10 | .625 (15.88) | .8750-14UNJF-3A | .873 (22.17) | 1.250 (31.75) | .594 (15.09) |
| -12 | .750 (19.05) | 1.0625-12UNJ-3A | 1.060 (26.92) | 1.468 (37.29) | .656 (16.66) |
| -16 | 1.000 (25.40) | 1.3125-12UNJ-3A | 1.310 (33.27) | 1.687 (42.85) | .656 (16.66) |
| Dash number | D inches (mm) |
E inches (mm) |
F Dia. +.010 (0.25) -.000 (see note 7) inches (mm) |
G Hex (ref) (see note 5) inches (mm) |
|
|---|---|---|---|---|---|
| -4 | 1.188 (47.96) | 1.375 (34.93) | .469 (11.91) | .688 (17.48) | ±.004 (0.10) |
| -5 | 1.188 (47.96) | 1.375 (34.93) | .531 (13.49) | .750 (19.05) | ±.004 (0.10) |
| -6 | 1.344(34.14) | 1.562 (39.67) | .594 (15.09) | .813 (20.65) | ±.004 (0.10) |
| -8 | 1.688 (42.88) | 1.938 (49.23) | .781 (19.84) | 1.000 (25.40) | ±.004 (0.10) |
| -10 | 1.969 (50.01) | 2.250 (57.15) | .906 (23.01) | 1.125 (28.58) | ±.005 (0.13) |
| -12 | 2.312 (58.72) | 2.625 (66.68) | 1.094 (27.79) | 1.375 (34.93) | ±.005 (0.13) |
| -16 | 2.812 (71.42) | 3.188 (80.98) | 1.344 (34.14) | 1.625 (41.28) | ±.016 (0.41) |
| Dash number | J Dia. inches (mm) |
K inches (mm) |
L Dia. inches (mm) |
M Dia. inches (mm) |
|---|---|---|---|---|
| -4 | .172 (4.37) | 1.156 (29.36) | .344 (8.74) | .188 (4.78) |
| -5 | .234 (5.94) | 1.156 (29.36) | .406 (10.31) | .219 (5.56) |
| -6 | .297 (7.54) | 1.312 (33.32) | .469 (11.91) | .250 (6.35) |
| -8 | .391 (9.93) | 1.656 (42.06) | .625 (15.88) | .313 (7.95) |
| -10 | .484 (12.29) | 1.938 (49.23) | .750 (19.05) | .375 (9.53) |
| -12 | .609 (15.47) | 2.156 (54.76) | .938 (23.83) | .438 (11.13) |
| -16 | .844 (21.44) | 2.578 (65.48) | 1.188 (30.18) | .625 (15.88) |
NOTES:
- Dimensions are in inches.
- Metric equivalents are given for information only.
- Break sharp edges .and remove all hanging burrs and slivers.
- Unless otherwise noted tolerances shall be ±.005 inches (0.13 mm) and angles ±.5°.
- Tolerances for dimensions G and N are in accordance with SAE-AS4395 style E.
- Machined surfaces shall be smooth to 125µin Ra, hex surfaces may be 250µin Ra, unless otherwise specified on the figures. Surface finish shall be in accordance with ASME B46.1.
- Diameter F is last pitch diameter of last serration from point to point.
- Dimensions A, F, and J shall be concentric within .005 inch (0.13 mm) total indicator movement.
- For design features purposes, this standard takes precedence over documents referenced herein.
REQUIREMENTS
Dimensions and configuration shall be in accordance with figure 1.
Size -2 through -16 aluminum alloy maximum operating pressure is 1500 psi (10 MPa).
Steel, corrosion resistant steel (CRES), and titanium maximum operating pressure is 3000 psi (21 MPa).
Except as otherwise noted materials shall be in accordance with SAE-AS4875, see table I for material code.
TABLE I. Material and code letters.
| Code letter | Material |
|---|---|
| F | Steel alloy 4130 or 4120 In accordance with SAE-AMS6370 or SAE-AMS6382 1/ |
| J | CRES, type 304 |
| K | CRES, type 316 |
| R | CRES, type 321 |
| T | Titanium alloy 2/ |
| W | Aluminum alloy 7075-T73 |
| WN | Aluminum alloy 7075-T73 anodize in accordance with SAE-AS4875 then apply NAVAIR TCP in accordance with MIL-DTL-81706, type II, class 1A |
1/ Steel alloy 125,000 psi (860 MPa) minimum tensile strength.
2/ Not for use in oxygen systems.
Unless otherwise specified finishes shall be in accordance with SAE-AS4875.
Trivalent wrenchability. Applies to aluminum fittings that receive the NAVAIR TCP coating in accordance with MIL-DTL-81706, type II. When the finish has been damaged due to poor wrenchability, the surface of the fluid passage bolt shall be touched up using the brush plating process below. The term "trivalent wrenchability" is used to evaluate the ability of the finish to withstand abrasion from an excessive amount of wrenching.
Brush plating of NAVAIR TCP shall be in accordance with MIL-DTL-81706, type 2, class 1A, material form 1 through 6, application method B. Example of a PIN: M817062A6B.
PART IDENTIFICATION NUMBER (PIN) SPECIFICATION
The PIN consists of the letters “AN” the specification sheet number, a dash number for tube size, and a material code letter for material type. Unassigned PIN’s shall not be used.
PIN example: AN775-4W indicates a bolt – fluid passage, .250 inches (6.35 mm) tube OD, .4375-20UNJF-3A (7/16) threaded end, aluminum alloy 7075-T73.
GENERAL GUIDANCE
Cadmium is not recommended. To the users of this document, it is recommended that the use of carbon steel material with cadmium plating be used only when other materials and finishes specified in this document cannot meet performance requirements.
Cadmium is prohibited from use in NAVSEA owned shipboard systems in accordance with the requirements of T9070-AL-DPC-020/077-2.
Class I and II ozone depleting substances (ODS) shall not be used in AN775 or any referenced procedures.
Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.
Referenced documents shall be of the issue in effect on date of invitations for bid.
Changes from previous issue. Marginal notations are not used in this revision to identify changes with respect to the previous issue, due to the extent of the changes.
SUPERSESSION DATA
Steel blank designator has been replaced by steel alloy “F” designator.
Due to stress corrosion cracking aluminum alloys 2014 and 2024 “D” designator has been replaced by aluminum alloy 7075 “W” designator example: AN774-D4 use AN774-W4.
TABLE II. Cross-reference data.
| AN PIN (inactive part) |
Tube size | Replacement AN PIN (inactive part) |
|---|---|---|
| AN775-4 | .250 | AN775-4F |
| AN775-4D | .250 | AN775-4W |
| AN775-4J | .250 | |
| AN775-4K | .250 | |
| AN775-4R | .250 | |
| AN775-4T | .250 | |
| AN775-4W | .250 | |
| AN775-4WN | ||
| AN775-5 | .313 | AN775-5F |
| AN775-5D | .313 | AN775-5W |
| AN775-5J | .313 | |
| AN775-5K | .313 | |
| AN775-5R | .313 | |
| AN775-5T | .313 | |
| AN775-5W | .313 | |
| AN775-5WN | ||
| AN775-6 | .375 | AN775-6F |
| AN775-6D | .375 | AN775-6W |
| AN775-6J | .375 | |
| AN775-6K | .375 | |
| AN775-6R | .375 | |
| AN775-6T | .375 | |
| AN775-6W | .375 | |
| AN775-6WN | ||
| AN775-8 | .500 | AN775-8F |
| AN775-8D | .500 | AN775-8W |
| AN775-8J | .500 | |
| AN775-8K | .500 | |
| AN775-8R | .500 | |
| AN775-8T | .500 | |
| AN775-8W | .500 | |
| AN775-8WN | ||
| AN775-10 | .625 | AN775-10F |
| AN775-10D | . 625 | AN775-10W |
| AN775-10J | . 625 | |
| AN775-10K | . 625 | |
| AN775-10R | . 625 | |
| AN775-10T | . 625 | |
| AN775-10W | . 625 | |
| AN775-10WN | ||
| AN775-12 | .750 | AN775-12F |
| AN775-12D | .750 | AN775-12W |
| AN775-12J | .750 | |
| AN775-12K | .750 | |
| AN775-12R | .750 | |
| AN775-12T | .750 | |
| AN775-12W | .750 | |
| AN775-12WN | ||
| AN775-16 | 1.00 | AN775-16F |
| AN775-16D | 1.00 | AN775-16W |
| AN775-16J | 1.00 | |
| AN775-16K | 1.00 | |
| AN775-16R | 1.00 | |
| AN775-16T | 1.00 | |
| AN775-16W | 1.00 | |
| AN775-16WN |