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Standard

Bolt, Cluster Fitting, Double Port Flareless
2023-09-20
WIP
AS21940B
Graphics redrawn for better clarity. “INACTIVE” replaced by “NOT RECOMMENDED” on sheet 1. Revise thread S sizes in table 2A to coincide with table 2B and sizes specified on rev NC. Typo corrected for Dim H for size -10H. Table 3 updated showing previous and current part numbers. QPL note updated to current verbiage. Referenced standards updated to current nomenclature. Note 16, inventory disposition note added.
Standard

Fittings, Lubrication
2023-09-20
WIP
AS35411D
Rectify the Zinc coating callout by reinstating “Type 1” to the ASTM B 633 callout.
Standard

Sleeve, Hose Assembly, Chafe Guard, Neoprene Rubber
2023-09-20
WIP
AS1295A
Used as an outer protective cover on hose and/or hose assemblies to inhibit the detrimental effects of abrasion and other environmental conditions, thereby increasing service life. CAUTION: This sleeving is not recommended as a cover material for hose or hose assemblies with exposed wire braid reinforcement.
Standard

Torque Requirements, Installation and Qualification Test, Hose and Tube Fitting
2023-09-13
WIP
ARP908D
This Aerospace Recommended Practice (ARP) is intended to establish recommended installation torque values limits and test criterion for machined flared and flareless hose end fitting connections. Assembly of bite-type MS21922 flareless sleeves is not included in the ARP (see MIL-F-18280). This ARP is applicable to two types of connections and two basic material classifications. Type I - Flared to mate with MS33656 Type II - Flareless to mate with MS33514 Material I - Steel, corrosion resistant steel, and titanium fittings Material II - Aluminum fittings.
Standard

Hose Assembly, Polytetrafluoroethylene (PTFE), Low Pressure, 450°F and Fireproof, Procurement Specification For
2023-09-13
WIP
AS4897
This SAE Aerospace Standard (AS) covers the requirements for polytetrafluoroethylene (PTFE) hose assemblies for use in aerospace fuel and lubricating oil systems at temperatures between -67 and 450°F and at operating pressures per Table 1. The hose assemblies are also suitable for use within the same temperature and pressure limitations in aerospace pneumatic systems where some gaseous diffusion through the wall of the PTFE liner can be tolerated. The use of these hose assemblies in pneumatic storage systems is not recommended. In addition, installations in which the limits specified herein are exceeded, or in which the application is not covered specifically by this document, for example oxygen, shall be subject to the approval of the purchaser.
Standard

Guide for Choosing a Minimum Wall Thickness of Tubing for Use with Weld Fittings Coded for a Range of Wall Sizes
2023-09-11
CURRENT
ARP4698A
This SAE Aerospace Recommended Practice (ARP) is intended as a guide for choosing a minimum wall thickness of tubing, based only on pressure, for use with welded tube fitting ends that have a “tube wall code” covering a range of tube wall thicknesses. These wall thicknesses are based on burst pressure with an arbitrary additional safety factor. If the weld fitting user has already established the required minimum wall thickness for given performance conditions, this guide does not apply.
Standard

Marking; Standard Hose, Aircraft
2023-09-11
CURRENT
ARP6002A
This document establishes the industry standard practices for marking standard elastomeric hose used in aircraft manufacture and repair.
Standard

Fluid Connections, Fittings, Hex Width
2023-09-11
CURRENT
ARP4919A
This SAE Aerospace Recommended Practice (ARP) is intended as a guide toward standard practice for selection of nominal hex widths for fittings.
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