NSN 5305-01-337-4893 NIIN 013374893 — Close Tolerance Screw

NSN
Item Name
Assigned
DEMIL
Shelf Life
UOM
Using Services
NSN:
5305-01-337-4893
5305013374893
Description:
SCREW,CLOSE TOLERANCE
NSN Assigned:
16-APR-91
DEMIL:
NO
Shelf Life:
N/A
UOM:
No qup EA
Using Services:
Navy

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Quality Commitment

Serving our customers with quality and safety first.

  •   AS9120 Certified
  •   Audited supply chain
  •   ITAR Registered
  •   DDTC Registered
  •   HAZMAT Certified
  •   Customer service objectives
  •   Every product 100% inspected
AS9120 Certified by SAI Global

5305-01-337-4893 Specification Set by the OEM (see RNCC code 3)

Thread Class AAJD:

3a

Thread Direction AAJF:

RIGHT-Hand

Thread Length AASA:

0.469in. ⁓15/32"

Fastener Length AASB:

0.954in. and 0.984in. ⁓63/64"

Head Style AASK:

flat countersunk

Head Diameter AASL:

0.456in. and 0.508in.

Grip Diameter AAUR:

0.2490in. and 0.2495in.

Internal Drive Style ABQZ:

HIGH-Torque

Nominal Thread Diameter AHYM:

0.250in. ⁓1/4"

Grip Length ANEE:

0.490in. and 0.510in.

Thread Quantity Per Inch CMLP:

28

Countersink Angle CRSQ:

99.0 degrees and 101.0 degrees

Surface Finish CSYM:

32.0 microinches bearing surface of HEAD32.0 microinches GRIP32.0 microinches threads

Iii Part Name Assigned By Controlling Agency CXCY:

navy special project

Special Features FEAT:

tapped hole in head 0.138-32 UNJC-3B threads. distance from top of head to injection port 0.270 nom. inch. injection port 0.120 nom. in. lg; 0.060 nom. in. wide

Material MATT:

titanium alloy uns R56400

Material Document And Classification MDCL:

ams 4928 assn std single material response or ams 4967 assn std single material response

Surface Treatment SFTT:

phosphate

Thread Series Designator THSD:

unjf

Cross Reference Parts Part numbers that meet the specification outlined on this page and set by the OEM

Part Number
Cage
RNCC
RNVC
DAC
RNAAC
Status
MSDS
SADC
Part Number:
HT4075VS4-8-27
Cage Code:
73197
RNCC:
3
RNVC:
2
DAC:
A
RNAAC:
KZ
Status:
A
MSDS:
SADC:
Part Number:
HT4075VS4-8-27
Cage Code:
L4528
RNCC:
3
RNVC:
2
DAC:
A
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
HT4075VS4-8-27
Cage Code:
06950
RNCC:
5
RNVC:
2
DAC:
5
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
HT4075VS4-8-27
Cage Code:
17446
RNCC:
5
RNVC:
2
DAC:
5
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
HT4075VS4-8-27
Cage Code:
17419
RNCC:
5
RNVC:
2
DAC:
A
RNAAC:
KZ
Status:
A
MSDS:
SADC:
Part Number:
HT4075VS4-8-27
Cage Code:
80539
RNCC:
5
RNVC:
2
DAC:
A
RNAAC:
KZ
Status:
A
MSDS:
SADC:
Part Number:
HT4075VS4-8-27
Cage Code:
97928
RNCC:
5
RNVC:
9
DAC:
A
RNAAC:
KZ
Status:
A
MSDS:
SADC:
Part Number:
HT4075VS4-8-27
Cage Code:
92215
RNCC:
5
RNVC:
9
DAC:
A
RNAAC:
KZ
Status:
A
MSDS:
SADC:
Part Number:
HT4075VS4-8-27
Cage Code:
03950
RNCC:
3
RNVC:
2
DAC:
A
RNAAC:
ZZ
Status:
A
MSDS:
SADC:

Identification Item Identification Guide (IIG) and Item Name Code (INC)

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
29294
FIIG:
A003B0
Concept No.:
App. Key:
SS
Cond. Code:
1
Status:
A
HEAD STYLE FLAT COUNTERSUNK style nsn 5305-01-337-4893
INTERNAL DRIVE STYLE HIGH-TORQUE style nsn 5305-01-337-4893

Definition Definition of approved item name (AIN): "SCREW,CLOSE TOLERANCE"

A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.

5305-01-337-4893 Material Hazmat, Precious Metals, Criticality, Enviroment, and ESD

HMIC
PMIC
ESD
ENAC
ADPE
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
ADPE:
CRITL:
X
Hazmat (HMIC) N

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

Precious Metals (PMIC) U

Precious metal content is unknown

Criticality X

The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

  Identification Codes

HMIC: Hazardous Material Indicator Code. A one position code that identifies a hazardous item.

PMIC: Precious Metal Indicator Code. A one position code which identifies items that have precious metals as part of their content. precious metals are those metals generally considered to be uncommon, highly valuable, and relatively superior in certain properties such as resistance to corrosion and electrical conductivity.

ESD: Electrostatic Discharge. Indicates if an item is susceptible to electrostatic discharge or electromagnetic interference damage. electrostatic discharge damage occurs when an accumulation of static electricity generated by the relative motion or separation of materials is released to another item by direct contact. electromagnetic interference damage occurs when an item comes into proximity with an electrostatic or magnetic field.

ENAC: Enviromental Attribute Code. Identifies items with environmentally preferred characteristics.

CRITL: Criticality Indicator Code. Indicates an item is technically critical by tolerance, fit, application, nuclear hardness properties, or other characteristics.

Material Management Material categorization and source of supply

SOS
SMIC
MMAC
MCC
SOS:
SMS
SOS:
MMAC:
MCC:
Source of Supply (SOS) SMS

Defense logistics agency, enterprise business systems

  Material Codes

SOS: Source of Supply. A three position code or routing identifier code (ric), which identifies the source of supply activity.

SMIC: Special Material Indicator Code. A two position code, which categorizes material on the basis of requirements for source or quality control, technical design or configuration control, procurement, stocking and issue control, special receipt, inspection, testing, storage, or handling.

MMAC: Material Management Aggregation Code. A two position code that identifies an item of supply to be managed by a specific activity manager.

MCC: Material Echelon Code. A two position code employed by the marine corps in classifying items into categories by materiel category and procurement echelon. the alphanumeric management code is in the first position and identifies the materiel category

IMC: Denotes wether items shall be subjected to integrated management under the defense supply agency or retained by the individual military service or other department of defense components for their management. Assigned by th activity responsible for item management coding.