AIR FORCE - NAVY AERONAUTICAL STANDARD

SETSCREW-HEXAGON AND FLUTED SOCKET. HEADLESS

NOTE. THIS DRAWING WAS APPROVED BY JOINT ACTION OF THE AIR FORCE AND NAVY
DEPARTMENTS AS THE AIR FORCE-NAVY STANDARD FOR THIS PRODUCT. THIS DRAWING
SUPERSEDES ALL ANTECEDENT STANDARD DRAWINGS FOR THE SAME PRODUCT AND SHALL
BECOME EFFECTIVE FOR THE PROCUREMENT OF AERONAUTICAL SUPPLIES, OR FOR USE IN
NEW DESIGN NOT LATER THAN 6 MONTHS AFTER THE LATEST DATE OF APPROVAL SHOWN.

NOTICE: WHEN GOVERNMENT DRAWINGS. SPECIFICATIONS OR OTHER DATA ARE USED FOR ANY PURPOSE OTHER
THAN IN CONNECTION WITH A DEFINITELY RELATED GOVERNMENT PROCUREMENT OPERATION, THE UNITED STATES
GOVERNMENT THEREBY INCURS NO RESPONSIBILITY. NOR ANY OBLIGATION WHATSOEVER; AND THE FACT THAT
THE GOVERNMENT MAY HAVE FORMULATED. FURNISHED, OR IN ANY WAY SUPPLIED THE SAID DRAWINGS. SPECIFICATIONS,
OR ANY OTHER DATA IS NOT TO BE REGARDED BY IMPLICATION OR OTHERWISE AS IN ANY MANOR LICENSING THE HOLDER
OR ANY OTHER PERSON OR CORPORATION, OR CONVEYING ANY RIGHTS OR PERMISSION TO MANUFACTURE, USE, OR
SELL ANY PATENTED INVENTION THAT MAY IN ANY WAY BE RELATED THERETO.

NO'S 2 AND 6 ARE INACTIVE FOR NEW DESIGN AFTER 15 MAY 1994

DISTRIBUTION STATEMENT A. APPROVED FOR PUBLIC RELEASE; DISTRIBUTION IS UNLIMITED.

FSC 5305

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THE NO.2 SIZE IS NON-PREFERRED FOR AIRFRAME USE

NO.3-48, NO.5-40, NO.10-24. 1/4-20, 5/16-18, 3/8-16, AND 1/2-13 COARSE THREAD SETSCREW INACTIVE FOR NEW DESIGN AFTER 1 JULY 1954

NO.4-40 IS INACTIVE FOR NEW DESIGN AFTER 15 MAY 1994

COARSE THREADS

FINE THREADS

(a) SOCKET DEPTH A: THE DEPTH OF SOCKET SHALL BE AS GREAT AS PRACTICABLE BUT VARYING CONDITIONS RENDER IT INADVISABLE TO SPECIFY DEFINITE VALUES FOR THIS DIMENSION.

(b) SOCKET END OF SCREW SHALL BE FLAT AND CHAMFERED. THE CHAMFER SHALL EXTEND TO THE BOTTOM OF THE THREAD AND THE EDGE BETWEEN FLAT AND CHAMFER SHALL BE SLIGHTLY ROUNDED. THE CHAMFER FOR UNC THREADS 0.250 INCH AND LARGER SHALL BE AT THE OPTION OF THE MANUFACTURER, BUT THE ANGLE SHALL NOT EXCEED 45'.

(c) NO. 3-48. 5-40, 10-24. 1/4-20, 5/16-18, 3/8-16, 1/2-13 SETSCREWS INACTIVE FOR NEW DESIGN AFTER 1 JULY 1954. SL0TTED HEAD SETSCREWS INACTIVE FOR NEW DESIGN AFTER 1 JULY 1954. USE HEXAGON SOCKET SETSCREWS. NO. 2. AND 6 SIZES FLUTED SOCKET HEAD SETSCREWS ARE INACTIVE FOR NEW DESIGN AFTER 15 MAY 1994.

(d) TOLERANCES FOR OVAL POINT RADIUS SHALL BE +.015 -.000 FOR NOMINAL SIZES NO. 2 THROUGH NO. 5 AND  +.031 -.000 FOR NOMINAL SIZES NO. 6 AND LARGER.

REQUIREMENTS:

1. MATERIAL:       STEEL IN ACCORDANCE WITH THE PROCUREMENT SPECIFICATION.
                            CORROSION RESISTANT STEEL IN ACCORDANCE WITH THE PROCUREMENT SPECIFICATION.

2. FINISH:             STEEL - CADMIUM PLATE, SPECIFICATION 00-P-416, TYPE 11, CLASS 2. PARTS WITH CLASS 3
                                           PLATING MAY BE FURNISHED FROM SUPPLIER'S STOCK UNTIL 1 JANUARY 1975.
                            CRES -   PASSIVATE IN ACCORDANCE WITH QQ-P-35.

3. HEXAGON SOCKET AND FLUTED SOCKET SETSCREWS MAY BE SPECIFIED WITH ANY POINT STYLE SHOWN: KNURLED POINT ON TYPE D SETSCREW MAY BE SUPPLIED AS OPTIONAL.

4. CODES:

        ADD POINT STYLE TYPE BEFORE FIRST DASH NUMBER.

        ADD H BETWEEN DASH NUMBERS FOR SETSCREW WITH HEXAGON SOCKET HEAD.

        ADD L BETWEEN DASH NUMBERS FOR SETSCREW WITH FLUTED SOCKET HEAD. (NO. 2. 4 AND 6 SIZES, ONLY.)

        (c) DASH BETWEEN DASH NUMBERS DESIGNATES SLOTTED HEAD SETSCREW (INACTIVE FOR DESIGN).

        ADD C AFTER POINT STYLE TYPE TO DESIGNATE CORROSION RESISTING STEEL SETSCREWS.

5. PART NUMBERS:

    EXAMPLES OF PART NOS.:

AN565B1032H12 = SETSCREW WITH TYPE B POINT, WITH HEXAGON SOCKET HEAD. NO.10-32 SIZE (.190 INCH DIA) 3/4 (12/16) IN. LONG STEEL.

AN565B4L5 = SETSCREW WITH TYPE B POINT, WITH FLUTED SOCKET HEAD. NO.4-40 SIZE (.112 INCH DIA), 5/16 INCH LONG. STEEL.

(c) AN565A10-12 = SETSCREW WITH TYPE A POINT, WITH SLOTTED HEAD, NO. 10-24 SIZE (.190 INCH DIA), 3/4(12/16) INCH LONG, STEEL. (INACTIVE FOR DESIGN).

AN565BC1032HI2 = SETSCREW WITH TYPE B POINT, WITH HEXAGON SOCKET HEAD. NO.10-32 SIZE. 3/4 INCH LONG, CORROSION RESISTING STEEL.

6. THE LIST OF SETSCREWS THAT ARE CONSIDERED AS STANDARD STOCK ITEMS IS INCLUDED IN SPECIFICATION FF-S-200.

7. SCREWS WITH NATIONAL CLASS 3 THREAD MAY BE SUBSTITUTED FOR UNIFIED CLASS 3A THREADS UNTIL EXISTING STOCKS OF NATIONAL CLASS 3 SCREWS ARE DEPLETED. UNIFIED CLASS 3A WILL BE MANDATORY ON ALL SCREWS SUPPLIED AFTER 1 JANUARY 1956.

8. PARTS MANUFACTURED PRIOR TO THIS REVISION, DATED 15 JANUARY 1996, MAY BE FURNISHED UNTIL EXHAUSTED.

NOTES:

1. DIMENSIONS IN INCHES. UNLESS OTHERWISE SPECIFIED, TOLERANCES: FRACTIONS +1/64, DECIMALS +.005.

2. IN THE EVENT OF A CONFLICT BETWEEN THE-TEXT OF THIS DOCUMENT AND THE REFERENCES CITED HEREIN, THE TEXT OF THIS DOCUMENT SHALL TAKE PRECEDENCE.

3. UNLESS OTHERWISE SPECIFIED, ISSUES OF REFERENCED DOCUMENTS ARE THOSE IN EFFECT AT THE TIME OF SOLICITATION.

4. DIMENSIONS ARE IN ACCORDANCE WITH ASME Y14.5M-1994.

5. PROCUREMENT SPECIFICATION: FF-S-200.

6. SUPERSEDES: USAF DRAWINGS 565 AND 566.